Sync eng/common directory with azure-sdk-tools for PR 5540 (Azure#29074)

* add parameter to set cadl emitter options

* remove emitter name in the additional parameter

---------

Co-authored-by: chunyu3 <chunyu@microsoft.com>

Author: azure-sdk

eng/common/scripts/Cadl-Project-Generate.ps1

@@ -4,7 +4,9 @@
 param (
     [Parameter(Position=0)]
     [ValidateNotNullOrEmpty()]
-    [string] $ProjectDirectory
+    [string] $ProjectDirectory,
+    [Parameter(Position=1)]
+    [string] $CadlAdditionalOptions ## addtional cadl emitter options, separated by semicolon if more than one, e.g. option1=value1;option2=value2
 )
 
 $ErrorActionPreference = "Stop"
@@ -78,6 +80,12 @@ try {
         }
     }
     $cadlCompileCommand = "npx cadl compile $mainCadlFile --emit $emitterName$emitterAdditionalOptions"
+    if ($CadlAdditionalOptions) {
+        $options = $CadlAdditionalOptions.Split(";");
+        foreach ($option in $options) {
+            $cadlCompileCommand += " --option $emitterName.$option"
+        }
+    }
     Write-Host($cadlCompileCommand)
     Invoke-Expression $cadlCompileCommand