[Infra-BuildScript] Add PowerShell Script to Enforce Shared Common.Dotnet.CsWinRT.props in all CSharp Projects under Src Sub-Folder (#37811)

* Add Powershell script to validate whether CSharp project correctly import shared props, update pipeline to enforce such validation, and fixed all projects that didn't import this shared props correctly

* add common props for fuzz test project

* update the path

* Only scans projects in src sub-folder

* Update .pipelines/verifyCommonProps.ps1

* Update csproj to include Common.Dotnet.CsWinRT.props

* Fix indentation in RegistryPreview.FuzzTests.csproj

* exclude TemplateCmdPalExtension.csproj in validation process

* exclude TemplateCmdPalExtension.csproj in validation process

---------

Co-authored-by: Leilei Zhang <leilzh@microsoft.com>
Co-authored-by: Jerry Xu <nxu@microsoft.com>

.pipelines/verifyCommonProps.ps1

@@ -0,0 +1,54 @@
+[CmdletBinding()]
+Param(
+    [Parameter(Mandatory = $True, Position = 1)]
+    [string]$sourceDir
+)
+
+# scan all csharp project in the source directory
+function Get-CSharpProjects {
+    param (
+        [string]$path
+    )
+
+    # Get all .csproj files under the specified path
+    return Get-ChildItem -Path $path -Recurse -Filter *.csproj | Select-Object -ExpandProperty FullName
+}
+
+# Check if the project file imports 'Common.Dotnet.CsWinRT.props'
+function Test-ImportSharedCsWinRTProps {
+    param (
+        [string]$filePath
+    )
+
+    # Load the XML content of the .csproj file
+    [xml]$csprojContent = Get-Content -Path $filePath
+
+    
+    # Check if the Import element with Project attribute containing 'Common.Dotnet.CsWinRT.props' exists
+    return $csprojContent.Project.Import | Where-Object { $null -ne $_.Project -and $_.Project.EndsWith('Common.Dotnet.CsWinRT.props') }
+}
+
+# Call the function with the provided source directory
+$csprojFilesArray = Get-CSharpProjects -path $sourceDir
+
+$hasInvalidCsProj = $false
+
+# Enumerate the array of file paths and call Validate-ImportSharedCsWinRTProps for each file
+foreach ($csprojFile in $csprojFilesArray) {
+    # Skip if the file ends with 'TemplateCmdPalExtension.csproj'
+    if ($csprojFile -like '*TemplateCmdPalExtension.csproj') {
+        continue
+    }
+
+    $importExists = Test-ImportSharedCsWinRTProps -filePath $csprojFile
+    if (!$importExists) {
+        Write-Output "$csprojFile need to import 'Common.Dotnet.CsWinRT.props'."
+        $hasInvalidCsProj = $true
+    }
+}
+
+if ($hasInvalidCsProj) {
+    exit 1
+}
+
+exit 0