Füge Überprüfung der SharePoint PowerShell-Komponenten hinzu und verbessere die Fehlerbehandlung in den Skripten

deployment/test-megamenu-site-scope.ps1

@@ -5,7 +5,17 @@ param(
     [string]$Description = 'MSFT-Custom-Solution:MegaMenu'
 )
 
-Add-PSSnapin Microsoft.SharePoint.PowerShell -ErrorAction SilentlyContinue | Out-Null
+if (-not (Get-Command -Name Get-SPSite -ErrorAction SilentlyContinue)) {
+    if (Get-Module -ListAvailable -Name Microsoft.SharePoint.PowerShell) {
+        Import-Module Microsoft.SharePoint.PowerShell -DisableNameChecking
+    }
+    elseif (Get-PSSnapin -Registered -Name Microsoft.SharePoint.PowerShell -ErrorAction SilentlyContinue) {
+        Add-PSSnapin Microsoft.SharePoint.PowerShell
+    }
+    else {
+        throw 'Die SharePoint PowerShell-Komponenten wurden nicht gefunden. Bitte in der SharePoint Management Shell ausfuehren.'
+    }
+}
 
 $componentId = [Guid]'c0abbffb-355d-4d4e-bd38-9e15fb811506'
 $legacyComponentId = [Guid]'abc3361f-bb2d-491f-aba3-cd51c19a299b'