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/package.json

@@ -15,6 +15,7 @@
     "dependencies": {
         "@sammo-ts/common": "workspace:*",
         "@sammo-ts/game-api": "workspace:*",
+        "@sammo-ts/gateway-api": "workspace:*",
         "@sammo-ts/logic": "workspace:*",
         "@trpc/client": "^11.8.1",
         "@trpc/server": "^11.8.1",