API: return resource ID for auth key creation, folder permissions update and user invite complete endpoints (#27419)

* API: add ID to auth key and folder endpoints

* API: add test for folder permissions update

* API: add created user id for /invite/complete endpoint

docs/sources/http_api/auth.md

@@ -128,7 +128,7 @@ Error statuses:
 HTTP/1.1 200
 Content-Type: application/json
 
-{"name":"mykey","key":"eyJrIjoiWHZiSWd3NzdCYUZnNUtibE9obUpESmE3bzJYNDRIc0UiLCJuIjoibXlrZXkiLCJpZCI6MX1="}
+{"name":"mykey","key":"eyJrIjoiWHZiSWd3NzdCYUZnNUtibE9obUpESmE3bzJYNDRIc0UiLCJuIjoibXlrZXkiLCJpZCI6MX1=","id":1}
 ```
 
 ## Delete API Key

docs/sources/http_api/folder_permissions.md

@@ -138,7 +138,7 @@ HTTP/1.1 200 OK
 Content-Type: application/json; charset=UTF-8
 Content-Length: 35
 
-{"message":"Folder permissions updated"}
+{"message":"Folder permissions updated","id":1,"title":"Department ABC"}
 ```
 
 Status Codes: