feat: Implement session management and routing for general creation

- Added session initialization in main.ts to manage user sessions.
- Updated router to include a new route for joining or creating a general.
- Enhanced session store with methods for managing session tokens and user profiles.
- Introduced new components for displaying city, general, nation, and command information.
- Implemented loading states and error handling in the main view.
- Created a skeleton loader component for better user experience during data fetching.
- Updated TypeScript definitions for route metadata to include new authentication requirements.

app/game-frontend/src/main.ts

@@ -3,10 +3,15 @@ import { createPinia } from 'pinia';
 import App from './App.vue';
 import router from './router';
 import './assets/main.css';
+import { useSessionStore } from './stores/session';
 
 const app = createApp(App);
 
-app.use(createPinia());
+const pinia = createPinia();
+app.use(pinia);
 app.use(router);
 
+const session = useSessionStore(pinia);
+void session.initialize();
+
 app.mount('#app');