Apply dart auto fixes

lib/widget/ListItem.dart

@@ -2,7 +2,7 @@
 import 'package:flutter/material.dart';
 
 class ListItemNavigator extends StatelessWidget {
-  const ListItemNavigator({Key? key, required this.icon, required this.text, required this.target, this.onLongPress, this.arrow = true}) : super(key: key);
+  const ListItemNavigator({super.key, required this.icon, required this.text, required this.target, this.onLongPress, this.arrow = true});
 
   final IconData icon;
   final String text;

lib/widget/about/about.dart

@@ -2,7 +2,7 @@
 import 'package:flutter/material.dart';
 
 class About extends StatelessWidget {
-  const About({Key? key}) : super(key: key);
+  const About({super.key});
 
   @override
   Widget build(BuildContext context) {

lib/widget/animatedTime.dart

@@ -5,7 +5,7 @@ import 'package:flutter/material.dart';
 
 class AnimatedTime extends StatefulWidget {
   final Duration Function() callback;
-  const AnimatedTime({Key? key, required this.callback}) : super(key: key);
+  const AnimatedTime({super.key, required this.callback});
 
   @override
   State<AnimatedTime> createState() => _AnimatedTimeState();

lib/widget/confirmDialog.dart

@@ -8,7 +8,7 @@ class ConfirmDialog extends StatelessWidget {
   final String confirmButton;
   final String cancelButton;
   final void Function() onConfirm;
-  const ConfirmDialog({Key? key, required this.title, this.content = "", this.icon, this.confirmButton = "Ok", this.cancelButton = "Abbrechen", required this.onConfirm}) : super(key: key);
+  const ConfirmDialog({super.key, required this.title, this.content = "", this.icon, this.confirmButton = "Ok", this.cancelButton = "Abbrechen", required this.onConfirm});
 
   void asDialog(BuildContext context) {
     showDialog(context: context, builder: (context) => build(context));

lib/widget/debug/cacheView.dart

@@ -12,7 +12,7 @@ import 'jsonViewer.dart';
 
 class CacheView extends StatefulWidget {
   final collection = "MarianumMobile";
-  const CacheView({Key? key}) : super(key: key);
+  const CacheView({super.key});
 
   @override
   State<CacheView> createState() => _CacheViewState();

lib/widget/debug/jsonViewer.dart

@@ -6,7 +6,7 @@ class JsonViewer extends StatelessWidget {
   final String title;
   final Map<String, dynamic> data;
 
-  const JsonViewer({Key? key, required this.title, required this.data}) : super(key: key);
+  const JsonViewer({super.key, required this.title, required this.data});
 
   @override
   Widget build(BuildContext context) {

lib/widget/loadingSpinner.dart

@@ -4,7 +4,7 @@ import 'dart:async';
 import 'package:flutter/material.dart';
 
 class LoadingSpinner extends StatefulWidget {
-  const LoadingSpinner({Key? key}) : super(key: key);
+  const LoadingSpinner({super.key});
 
   @override
   State<LoadingSpinner> createState() => _LoadingSpinnerState();

lib/widget/placeholderView.dart

@@ -4,7 +4,7 @@ class PlaceholderView extends StatelessWidget {
   final IconData icon;
   final String text;
   final Widget? button;
-  const PlaceholderView({Key? key, required this.icon, required this.text, this.button}) : super(key: key);
+  const PlaceholderView({super.key, required this.icon, required this.text, this.button});
 
   @override
   Widget build(BuildContext context) {