added token retrievel and upload

Get-GDriveToken.ps1

@@ -0,0 +1,30 @@
+$client = Get-Content ".\client_secret.json" | ConvertFrom-Json
+
+$clientId = $client.installed.client_id
+$clientSecret = $client.installed.client_secret
+$redirectUri = "http://localhost"
+
+$scope = "https://www.googleapis.com/auth/drive.file"
+
+$authUrl = "https://accounts.google.com/o/oauth2/v2/auth?client_id=$clientId&redirect_uri=$redirectUri&response_type=code&scope=$scope&access_type=offline"
+
+Write-Host "Öffne folgende URL im Browser:"
+Write-Host $authUrl
+
+Start-Process $authUrl
+
+$code = Read-Host "Code aus URL eingeben"
+
+$body = @{
+    code = $code
+    client_id = $clientId
+    client_secret = $clientSecret
+    redirect_uri = $redirectUri
+    grant_type = "authorization_code"
+}
+
+$response = Invoke-RestMethod -Method Post -Uri "https://oauth2.googleapis.com/token" -Body $body
+
+$response | ConvertTo-Json | Out-File "token.json"
+
+Write-Host "Token gespeichert!"