Merge remote-tracking branch 'origin/development' into feature/118-bearbeiten-und-löschen-von-gruppen

# Conflicts:
#	lib/presentation/views/main_menu/group_view/create_group_view.dart
#	lib/presentation/views/main_menu/settings_view/settings_view.dart
#	lib/presentation/widgets/tiles/group_tile.dart

lib/presentation/views/main_menu/group_view/create_group_view.dart

@@ -0,0 +1,114 @@
+import 'package:flutter/material.dart';
+import 'package:game_tracker/core/custom_theme.dart';
+import 'package:game_tracker/core/enums.dart';
+import 'package:game_tracker/data/db/database.dart';
+import 'package:game_tracker/data/dto/group.dart';
+import 'package:game_tracker/data/dto/player.dart';
+import 'package:game_tracker/l10n/generated/app_localizations.dart';
+import 'package:game_tracker/presentation/widgets/buttons/custom_width_button.dart';
+import 'package:game_tracker/presentation/widgets/player_selection.dart';
+import 'package:game_tracker/presentation/widgets/text_input/text_input_field.dart';
+import 'package:provider/provider.dart';
+
+class CreateGroupView extends StatefulWidget {
+  /// A view that allows the user to create a new group
+  const CreateGroupView({super.key});
+
+  @override
+  State<CreateGroupView> createState() => _CreateGroupViewState();
+}
+
+class _CreateGroupViewState extends State<CreateGroupView> {
+  late final AppDatabase db;
+
+  /// Controller for the group name input field
+  final _groupNameController = TextEditingController();
+
+  /// List of currently selected players
+  List<Player> selectedPlayers = [];
+
+  @override
+  void initState() {
+    super.initState();
+    db = Provider.of<AppDatabase>(context, listen: false);
+    _groupNameController.addListener(() {
+      setState(() {});
+    });
+  }
+
+  @override
+  void dispose() {
+    _groupNameController.dispose();
+    super.dispose();
+  }
+
+  @override
+  Widget build(BuildContext context) {
+    final loc = AppLocalizations.of(context);
+    return ScaffoldMessenger(
+      child: Scaffold(
+        backgroundColor: CustomTheme.backgroundColor,
+        appBar: AppBar(title: Text(loc.create_new_group)),
+        body: SafeArea(
+          child: Column(
+            mainAxisAlignment: MainAxisAlignment.start,
+            children: [
+              Container(
+                margin: CustomTheme.standardMargin,
+                child: TextInputField(
+                  controller: _groupNameController,
+                  hintText: loc.group_name,
+                ),
+              ),
+              Expanded(
+                child: PlayerSelection(
+                  onChanged: (value) {
+                    setState(() {
+                      selectedPlayers = [...value];
+                    });
+                  },
+                ),
+              ),
+              CustomWidthButton(
+                text: loc.create_group,
+                sizeRelativeToWidth: 0.95,
+                buttonType: ButtonType.primary,
+                onPressed:
+                    (_groupNameController.text.isEmpty ||
+                        (selectedPlayers.length < 2))
+                    ? null
+                    : () async {
+                        bool success = await db.groupDao.addGroup(
+                          group: Group(
+                            name: _groupNameController.text.trim(),
+                            members: selectedPlayers,
+                          ),
+                        );
+                        if (!context.mounted) return;
+                        if (success) {
+                          Navigator.pop(context);
+                        } else {
+                          ScaffoldMessenger.of(context).showSnackBar(
+                            SnackBar(
+                              backgroundColor: CustomTheme.boxColor,
+                              content: Center(
+                                child: Text(
+                                  AppLocalizations.of(
+                                    context,
+                                  ).error_creating_group,
+                                  style: const TextStyle(color: Colors.white),
+                                ),
+                              ),
+                            ),
+                          );
+                        }
+                      },
+              ),
+              const SizedBox(height: 20),
+            ],
+          ),
+        ),
+      ),
+    );
+  }
+}

lib/presentation/views/main_menu/group_view/groups_view.dart

@@ -14,6 +14,7 @@ import 'package:game_tracker/presentation/widgets/top_centered_message.dart';
 import 'package:provider/provider.dart';
 
 class GroupsView extends StatefulWidget {
+  /// A view that displays a list of groups
   const GroupsView({super.key});
 
   @override