feat: add Supabase authentication context and routes

- Implemented Supabase authentication context in `supabase.tsx` for managing user login and logout.
- Created a new SVG logo file for branding.
- Set up main application entry point in `main.tsx` with router integration.
- Added web vitals reporting in `reportWebVitals.ts`.
- Generated route tree in `routeTree.gen.ts` for application routing.
- Established root route in `__root.tsx` with TanStack Router Devtools integration.
- Created authenticated route in `_authenticated.tsx` to protect routes.
- Developed planes route under authenticated section in `planes.tsx`.
- Implemented login route with form handling in `login.tsx`.
- Added index route with welcome message in `index.tsx`.
- Included basic styles in `styles.css`.
- Configured TypeScript settings in `tsconfig.json`.
- Set up Vite configuration with React and TanStack Router plugins in `vite.config.ts`.

.cta.json

@@ -0,0 +1,11 @@
+{
+  "projectName": "tanstack-router",
+  "mode": "file-router",
+  "typescript": true,
+  "tailwind": false,
+  "packageManager": "bun",
+  "git": true,
+  "version": 1,
+  "framework": "react-cra",
+  "chosenAddOns": []
+}