Add job router rest client library (Azure#27325)

JobRouter js sdk for GA


### Packages impacted by this PR


### Issues associated with this PR


### Describe the problem that is addressed by this PR


### What are the possible designs available to address the problem? If
there are more than one possible design, why was the one in this PR
chosen?


### Are there test cases added in this PR? _(If not, why?)_


### Provide a list of related PRs _(if any)_


### Command used to generate this PR:**_(Applicable only to SDK release
request PRs)_

### Checklists
- [ ] Added impacted package name to the issue description
- [ ] Does this PR needs any fixes in the SDK Generator?** _(If so,
create an Issue in the
[Autorest/typescript](https://github.com/Azure/autorest.typescript)
repository and link it here)_
- [ ] Added a changelog (if necessary)

---------

Co-authored-by: Marc Ma <marcma@microsoft.com>

Author: marche0133

common/config/rush/pnpm-lock.yaml

@@ -485,6 +485,11 @@
       "projectFolder": "sdk/communication/communication-job-router",
       "versionPolicyName": "client"
     },
+    {
+      "packageName": "@azure-rest/communication-job-router",
+      "projectFolder": "sdk/communication/communication-job-router-rest",
+      "versionPolicyName": "client"
+    },
     {
       "packageName": "@azure/container-registry",
       "projectFolder": "sdk/containerregistry/container-registry",

rush.json

@@ -0,0 +1,11 @@
+{
+  "plugins": ["@azure/azure-sdk"],
+  "extends": ["plugin:@azure/azure-sdk/azure-sdk-base"],
+  "rules": {
+    "@azure/azure-sdk/ts-modules-only-named": "warn",
+    "@azure/azure-sdk/ts-apiextractor-json-types": "warn",
+    "@azure/azure-sdk/ts-package-json-types": "warn",
+    "@azure/azure-sdk/ts-package-json-engine-is-present": "warn",
+    "tsdoc/syntax": "warn"
+  }
+}