migrated feedback submission from the legacy mhsl.eu endpoint to the MarianumConnect API

lib/view/pages/more/feedback/feedback_dialog.dart

@@ -1,12 +1,8 @@
-import 'dart:convert';
 import 'dart:typed_data';
 
 import 'package:flutter/material.dart';
-import 'package:package_info_plus/package_info_plus.dart';
 
-import '../../../../api/mhsl/server/feedback/add_feedback.dart';
-import '../../../../api/mhsl/server/feedback/add_feedback_params.dart';
-import '../../../../model/account_data.dart';
+import '../../../../api/marianumconnect/queries/submit_feedback/submit_feedback.dart';
 import '../../../../widget/async_action_button.dart';
 import '../../../../widget/file_pick.dart';
 import '../../../../widget/focus_behaviour.dart';
@@ -58,15 +54,10 @@ class _FeedbackDialogState extends State<FeedbackDialog> {
       setState(() => _textFieldEmpty = true);
       return;
     }
-    final info = await PackageInfo.fromPlatform();
-    await AddFeedback(
-      AddFeedbackParams(
-        user: AccountData().getUserSecret(),
-        feedback: _feedbackInput.text,
-        screenshot: _image != null ? base64Encode(_image!) : null,
-        appVersion: int.parse(info.buildNumber),
-      ),
-    ).run();
+    await SubmitFeedback().run(
+      message: _feedbackInput.text,
+      screenshot: _image,
+    );
     if (!mounted) return;
     Navigator.of(context).pop();
     InfoDialog.show(context, 'Danke für dein Feedback!');