feat: remove unused texture files and add model metadata

- Deleted various texture files related to the Raspberry Pi camera model.
- Introduced a new JSON file to store model metadata including IDs, names, and URLs.
- Implemented authentication and session management using Supabase.
- Created a header component for navigation and user session display.
- Added protected routes to restrict access to certain pages.
- Developed a private layout for authenticated users.
- Enhanced the home page to dynamically load models from the new JSON file.
- Updated the login page to handle user authentication.
- Created a model uploader for users to upload 3D models.
- Improved overall styling and layout for better user experience.

src/lib/AuthProvider.tsx

@@ -0,0 +1,40 @@
+import { createContext, useContext, useEffect, useState } from "react";
+import { supabase } from "./supabase";
+import { Session } from "@supabase/supabase-js";
+
+type AuthContextType = {
+  session: Session | null;
+  loading: boolean;
+};
+
+const AuthContext = createContext<AuthContextType>({ session: null, loading: true });
+
+export function AuthProvider({ children }: { children: React.ReactNode }) {
+  const [session, setSession] = useState<Session | null>(null);
+  const [loading, setLoading] = useState(true);
+
+  useEffect(() => {
+    supabase.auth.getSession().then(({ data: { session } }) => {
+      setSession(session);
+      setLoading(false);
+    });
+
+    const { data: listener } = supabase.auth.onAuthStateChange((_event, session) => {
+      setSession(session);
+    });
+
+    return () => {
+      listener.subscription.unsubscribe();
+    };
+  }, []);
+
+  return (
+    <AuthContext.Provider value={{ session, loading }}>
+      {children}
+    </AuthContext.Provider>
+  );
+}
+
+export function useAuth() {
+  return useContext(AuthContext);
+}

src/lib/supabase.ts

@@ -0,0 +1,6 @@
+import { createClient } from "@supabase/supabase-js";
+
+const supabaseUrl = import.meta.env.VITE_SUPABASE_URL!;
+const supabaseAnonKey = import.meta.env.VITE_SUPABASE_ANON_KEY!;
+
+export const supabase = createClient(supabaseUrl, supabaseAnonKey);