refactor(navigation): Use go_router for settings navigation

Replaced the `MaterialPageRoute` for navigating to the `SettingsPage` with `context.push("/settings")` to utilize `go_router`.

- Added a new `/settings` route in `lib/route.dart`.
- Removed a redundant `/main` route redirect.

Author: liplum

lib/route.dart

@@ -3,6 +3,7 @@ import 'package:escape_wild/ui/game/backpack/backpack.dart';
 import 'package:escape_wild/ui/game/craft/craft.dart';
 import 'package:escape_wild/ui/game/index.dart';
 import 'package:escape_wild/ui/main/game.dart';
+import 'package:escape_wild/ui/main/settings.dart';
 import 'package:flutter/widgets.dart';
 import 'package:go_router/go_router.dart';
 
@@ -14,13 +15,7 @@ RoutingConfig buildRoutingConfig() {
   return RoutingConfig(
     routes: [
       GoRoute(path: "/", builder: (ctx, state) => GamePage()),
-      GoRoute(
-        path: "/main",
-        redirect: (ctx, state) {
-          if (state.fullPath == "/main") return "/main/game";
-          return null;
-        },
-      ),
+      GoRoute(path: "/settings", builder: (ctx, state) => SettingsPage()),
       GoRoute(
         path: "/game",
         redirect: (ctx, state) {

lib/ui/main/game.dart

@@ -6,8 +6,6 @@ import 'package:rettulf/rettulf.dart';
 import 'package:easy_localization/easy_localization.dart';
 import 'package:tabler_icons/tabler_icons.dart';
 
-import 'settings.dart';
-
 part 'game.i18n.dart';
 
 class GamePage extends StatefulWidget {
@@ -28,7 +26,7 @@ class _GamePageState extends State<GamePage> {
         actions: [
           IconButton(
             onPressed: () {
-              context.navigator.push(MaterialPageRoute(builder: (_) => const SettingsPage()));
+              context.push("/settings");
             },
             icon: const Icon(TablerIcons.settings),
           ),