refactor: remove ProfileForm and update loading state display

- Removed the ProfileForm component from HomePage, simplifying the UI during loading.
- Added a loading spinner and message to indicate redirection to the login page, enhancing user experience.

middleware.ts

@@ -0,0 +1,54 @@
+import { NextRequest, NextResponse } from "next/server";
+
+const COOKIE_NAME = "peakSkills_userId";
+
+export function middleware(request: NextRequest) {
+  const { pathname } = request.nextUrl;
+
+  // Pages qui ne nécessitent pas d'authentification
+  const publicPaths = ["/login"];
+
+  // Pages API qui ne nécessitent pas d'authentification
+  const publicApiPaths = ["/api/auth", "/api/teams"];
+
+  // Vérifier si c'est une route publique
+  if (
+    publicPaths.includes(pathname) ||
+    publicApiPaths.some((path) => pathname.startsWith(path))
+  ) {
+    return NextResponse.next();
+  }
+
+  // Vérifier si c'est un fichier statique
+  if (
+    pathname.includes("/_next/") ||
+    pathname.includes("/favicon.ico") ||
+    pathname.includes("/public/")
+  ) {
+    return NextResponse.next();
+  }
+
+  // Vérifier le cookie d'authentification
+  const userId = request.cookies.get(COOKIE_NAME)?.value;
+
+  if (!userId) {
+    // Rediriger vers la page de login si pas authentifié
+    const loginUrl = new URL("/login", request.url);
+    return NextResponse.redirect(loginUrl);
+  }
+
+  return NextResponse.next();
+}
+
+export const config = {
+  matcher: [
+    /*
+     * Match all request paths except for the ones starting with:
+     * - api (API routes)
+     * - _next/static (static files)
+     * - _next/image (image optimization files)
+     * - favicon.ico (favicon file)
+     */
+    "/((?!_next/static|_next/image|favicon.ico).*)",
+  ],
+};