refactor: Fix psalm issues

- Add typing for most of the services, controllers and mappers
- Add api doc for mappers
- Use vendor-bin for psalm
- Use attributes for controllers
- Fix upload of attachments

Signed-off-by: Carl Schwan <carl.schwan@nextcloud.com>

lib/Service/Importer/Systems/TrelloJsonService.php

@@ -159,6 +159,7 @@ class TrelloJsonService extends ABoardImportService {
 				$comments[$cardId][$commentId] = $comment;
 			}
 		}
+		/** @var array<int, array<string, IComment>> */
 		return $comments;
 	}