feat: Add script to backup group members via csv file

powershell/backup-groupmembers.ps1

@@ -11,11 +11,15 @@ try {
     $ad_group = Get-ADGroup -Filter 'Name -eq $group -and GroupScope -eq "DomainLocal" -and GroupCategory -eq "Security"' -Server $server -Properties Member -ErrorAction Stop
         $csv_export_table = @()
         $ad_group.Member | ForEach-Object {
-            $ad_user = Get-ADUser -Identity $_ -Properties * -Server $server
-            $csv_export_table += [PSCustomObject]@{
-                Group = $group
-                MemberEmail = $ad_user.SamAccountName
-                MemberDistinguishedName = $ad_user.DistinguishedName
+            try {
+                $ad_user = Get-ADUser -Identity $_ -Properties * -Server $server -ErrorAction Stop
+                $csv_export_table += [PSCustomObject]@{
+                    Group = $group
+                    MemberEmail = $ad_user.SamAccountName
+                    MemberDistinguishedName = $ad_user.DistinguishedName
+                }
+            } catch {
+                Write-Error "User $group not found and skipped..."
             }
         }
     }