added support for custom addon collections

app/lib/core/routing/routes.dart

@@ -38,6 +38,7 @@ import 'package:weblibre/features/geckoview/features/tabs/presentation/screens/c
 import 'package:weblibre/features/geckoview/features/tabs/presentation/screens/container_list.dart';
 import 'package:weblibre/features/geckoview/features/tabs/presentation/screens/container_selection.dart';
 import 'package:weblibre/features/onboarding/presentation/onboarding.dart';
+import 'package:weblibre/features/settings/presentation/screens/addon_collection.dart';
 import 'package:weblibre/features/settings/presentation/screens/bang_settings.dart';
 import 'package:weblibre/features/settings/presentation/screens/developer_settings.dart';
 import 'package:weblibre/features/settings/presentation/screens/general_settings.dart';

app/lib/core/routing/routes.g.dart

@@ -112,6 +112,13 @@ RouteBase get $settingsRoute => GoRouteData.$route(
       path: 'developer',
       name: 'DeveloperSettingsRoute',
       factory: $DeveloperSettingsRoute._fromState,
+      routes: [
+        GoRouteData.$route(
+          path: 'addon_collection',
+          name: 'AddonCollectionRoute',
+          factory: $AddonCollectionRoute._fromState,
+        ),
+      ],
     ),
   ],
 );
@@ -268,6 +275,28 @@ mixin $DeveloperSettingsRoute on GoRouteData {
   void replace(BuildContext context) => context.replace(location);
 }
 
+mixin $AddonCollectionRoute on GoRouteData {
+  static AddonCollectionRoute _fromState(GoRouterState state) =>
+      AddonCollectionRoute();
+
+  @override
+  String get location =>
+      GoRouteData.$location('/settings/developer/addon_collection');
+
+  @override
+  void go(BuildContext context) => context.go(location);
+
+  @override
+  Future<T?> push<T>(BuildContext context) => context.push<T>(location);
+
+  @override
+  void pushReplacement(BuildContext context) =>
+      context.pushReplacement(location);
+
+  @override
+  void replace(BuildContext context) => context.replace(location);
+}
+
 RouteBase get $browserRoute => GoRouteData.$route(
   path: '/',
   name: 'BrowserRoute',

app/lib/core/routing/routes.settings.dart

@@ -47,6 +47,12 @@ part of 'routes.dart';
     TypedGoRoute<DeveloperSettingsRoute>(
       name: 'DeveloperSettingsRoute',
       path: 'developer',
+      routes: [
+        TypedGoRoute<AddonCollectionRoute>(
+          name: 'AddonCollectionRoute',
+          path: 'addon_collection',
+        ),
+      ],
     ),
   ],
 )
@@ -85,6 +91,13 @@ class DeveloperSettingsRoute extends GoRouteData with $DeveloperSettingsRoute {
   }
 }
 
+class AddonCollectionRoute extends GoRouteData with $AddonCollectionRoute {
+  @override
+  Widget build(BuildContext context, GoRouterState state) {
+    return const AddonCollectionScreen();
+  }
+}
+
 class WebEngineHardeningRoute extends GoRouteData
     with $WebEngineHardeningRoute {
   @override