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`.

src/routes/_authenticated.tsx

@@ -0,0 +1,9 @@
+import { createFileRoute, redirect } from '@tanstack/react-router'
+
+export const Route = createFileRoute('/_authenticated')({
+  beforeLoad: ({ context }) => {
+    if (!context.auth.isAuthenticated) {
+      throw redirect({ to: '/login', search: { redirect: location.href } })
+    }
+  },
+})