Sync eng/common directory with azure-sdk-tools for PR 2380 (Azure#25795)

* Add PowerShell Script for Validating READMEs

* Remember my VSCode doesn't use autosave

Co-authored-by: Alan Zimmer <48699787+alzimmermsft@users.noreply.github.com>

Author: azure-sdk

eng/common/scripts/Verify-Readme.ps1

@@ -0,0 +1,15 @@
+# Wrapper Script for Readme Verification
+[CmdletBinding()]
+param (
+  [string]$DocWardenVersion = "0.7.1",
+
+  [Parameter(Mandatory = $true)]
+  [string]$ScanPath,
+
+  [Parameter(Mandatory = $true)]
+  [string]$SettingsPath
+)
+
+pip install setuptools wheel --quiet
+pip install doc-warden==$DocWardenVersion --quiet
+ward scan -d $ScanPath -c $SettingsPath