refactor(App, navigation): migrate to Expo Router and clean up navigation structure

- Updated App entry point to utilize Expo Router, simplifying the navigation setup.
- Removed legacy navigation components and services to streamline the codebase.
- Adjusted package.json to reflect the new entry point and updated dependencies for compatibility.
- Enhanced overall application structure by consolidating navigation logic and improving maintainability.

app/index.tsx

@@ -0,0 +1,11 @@
+import { Redirect } from 'expo-router';
+
+import { useAuthStore } from '../src/stores';
+
+export default function Index() {
+  const isAuthenticated = useAuthStore((s) => s.isAuthenticated);
+  if (isAuthenticated) {
+    return <Redirect href="/home" />;
+  }
+  return <Redirect href="/login" />;
+}