Update Azure Identity lib README (Azure#25931)

**Summary of changes**
- Add API ref links for the workload identity and azd credentials
- Alphabetize table rows for dev tool credentials
- Switch from `require` to `import` in code samples

Author: scottaddie

sdk/identity/identity/README.md

@@ -161,10 +161,10 @@ This example demonstrates authenticating the `KeyClient` from the [@azure/keyvau
 // If environment configuration is incomplete, it will try managed identity.
 
 // Azure Key Vault service to use
-const { KeyClient } = require("@azure/keyvault-keys");
+import { KeyClient } from "@azure/keyvault-keys";
 
 // Azure authentication library to access Azure Key Vault
-const { DefaultAzureCredential } = require("@azure/identity");
+import { DefaultAzureCredential } from "@azure/identity";
 
 // Azure SDK clients accept the credential as a parameter
 const credential = new DefaultAzureCredential();
@@ -181,8 +181,8 @@ A relatively common scenario involves authenticating using a user-assigned manag
 
 While the `DefaultAzureCredential` is generally the quickest way to get started developing applications for Azure, more advanced users may want to customize the credentials considered when authenticating. The `ChainedTokenCredential` enables users to combine multiple credential instances to define a customized chain of credentials. This example demonstrates creating a `ChainedTokenCredential` which will attempt to authenticate using two differently configured instances of `ClientSecretCredential`, to then authenticate the `KeyClient` from the [@azure/keyvault-keys](https://www.npmjs.com/package/@azure/keyvault-keys):
 
-```javascript
-const { ClientSecretCredential, ChainedTokenCredential } = require("@azure/identity");
+```typescript
+import { ClientSecretCredential, ChainedTokenCredential } from "@azure/identity";
 
 // When an access token is requested, the chain will try each
 // credential in order, stopping when one provides a token
@@ -191,7 +191,7 @@ const secondCredential = new ClientSecretCredential(tenantId, anotherClientId, a
 const credentialChain = new ChainedTokenCredential(firstCredential, secondCredential);
 
 // The chain can be used anywhere a credential is required
-const { KeyClient } = require("@azure/keyvault-keys");
+import { KeyClient } from "@azure/keyvault-keys";
 const client = new KeyClient(vaultUrl, credentialChain);
 ```
 
@@ -213,7 +213,7 @@ For examples of how to use managed identity for authentication, see [the example
 
 Credentials default to authenticating to the Azure AD endpoint for Azure Public Cloud. To access resources in other clouds, such as Azure Government or a private cloud, configure credentials with the `authorityHost` argument in the constructor. The `AzureAuthorityHosts` interface defines authorities for well-known clouds. For the US Government cloud, you could instantiate a credential this way:
 
-```ts
+```typescript
 import { AzureAuthorityHosts, ClientSecretCredential } from "@azure/identity";
 const credential = new ClientSecretCredential(
   "<YOUR_TENANT_ID>",
@@ -237,7 +237,7 @@ Not all credentials require this configuration. Credentials that authenticate th
 | [`ChainedTokenCredential`](https://learn.microsoft.com/javascript/api/@azure/identity/chainedtokencredential?view=azure-node-latest)       | Allows users to define custom authentication flows composing multiple credentials.                               | [example](https://github.com/Azure/azure-sdk-for-js/blob/main/sdk/identity/identity/samples/AzureIdentityExamples.md#chaining-credentials)                                            |
 | [`EnvironmentCredential`](https://learn.microsoft.com/javascript/api/@azure/identity/environmentcredential?view=azure-node-latest)         | Authenticates a service principal or user via credential information specified in environment variables.         | [example](https://github.com/Azure/azure-sdk-for-js/blob/main/sdk/identity/identity/samples/AzureIdentityExamples.md#authenticating-a-service-principal-with-environment-credentials) |
 | [`ManagedIdentityCredential`](https://learn.microsoft.com/javascript/api/@azure/identity/managedidentitycredential?view=azure-node-latest) | Authenticates the managed identity of an Azure resource.                                                         | [example](https://github.com/Azure/azure-sdk-for-js/blob/main/sdk/identity/identity/samples/AzureIdentityExamples.md#authenticating-in-azure-with-managed-identity)                   |
-|`WorkloadIdentityCredential`| Supports [Azure AD workload identity](https://learn.microsoft.com/azure/aks/workload-identity-overview) on Kubernetes. | |
+| [`WorkloadIdentityCredential`](https://learn.microsoft.com/javascript/api/@azure/identity/workloadidentitycredential?view=azure-node-latest)| Supports [Azure AD workload identity](https://learn.microsoft.com/azure/aks/workload-identity-overview) on Kubernetes. | |
 
 ### Authenticate service principals
 
@@ -261,8 +261,8 @@ Not all credentials require this configuration. Credentials that authenticate th
 
 | Credential                                                                                                                                | Usage                                                             | Example                                                                                                                                                                   | Reference                                                                                           |
 | ----------------------------------------------------------------------------------------------------------------------------------------- | ----------------------------------------------------------------- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | --------------------------------------------------------------------------------------------------- |
-| `AzureDeveloperCliCredential`        | Authenticate in a development environment with the enabled user or service principal in Azure Developer CLI.     |         | [Azure Developer CLI Reference](https://learn.microsoft.com/azure/developer/azure-developer-cli/reference)             |
 | [`AzureCliCredential`](https://learn.microsoft.com/javascript/api/@azure/identity/azureclicredential?view=azure-node-latest)               | Authenticate in a development environment with the Azure CLI.     | [example](https://github.com/Azure/azure-sdk-for-js/blob/main/sdk/identity/identity/samples/AzureIdentityExamples.md#authenticating-a-user-account-with-azure-cli)        | [Azure CLI authentication](https://learn.microsoft.com/cli/azure/authenticate-azure-cli)             |
+| [`AzureDeveloperCliCredential`](https://learn.microsoft.com/javascript/api/@azure/identity/azuredeveloperclicredential?view=azure-node-latest)        | Authenticate in a development environment with the enabled user or service principal in Azure Developer CLI.     |         | [Azure Developer CLI Reference](https://learn.microsoft.com/azure/developer/azure-developer-cli/reference)             |
 | [`AzurePowerShellCredential`](https://learn.microsoft.com/javascript/api/@azure/identity/azurepowershellcredential?view=azure-node-latest) | Authenticate in a development environment using Azure PowerShell. | [example](https://github.com/Azure/azure-sdk-for-js/blob/main/sdk/identity/identity/samples/AzureIdentityExamples.md#authenticating-a-user-account-with-azure-powershell) | [Azure PowerShell authentication](https://learn.microsoft.com/powershell/azure/authenticate-azureps) |
 | [`VisualStudioCodeCredential`](https://learn.microsoft.com/javascript/api/@azure/identity/visualstudiocodecredential?view=azure-node-latest)	| Authenticates as the user signed in to the Visual Studio Code Azure Account extension.|  |	[VS Code Azure Account extension](https://marketplace.visualstudio.com/items?itemName=ms-vscode.azure-account)
 
@@ -299,7 +299,9 @@ Not all credentials require this configuration. Credentials that authenticate th
 Configuration is attempted in the above order. For example, if values for a client secret and certificate are both present, the client secret will be used.
 
 ## Token caching
+
 Token caching is a feature provided by the Azure Identity library that allows apps to:
+
 - Cache tokens in memory (default) and on disk (opt-in).
 - Improve resilience and performance.
 - Reduce the number of requests made to Azure AD to obtain access tokens.
@@ -325,7 +327,7 @@ require("dotenv").config({ path: ".env" });
 
 Alternatively, logging can be enabled at runtime by calling `setLogLevel` from the `@azure/logger` package:
 
-```javascript
+```typescript
 import { setLogLevel } from "@azure/logger";
 
 setLogLevel("info");