Refactor authentication actions and add user verification functionality

- Updated signin and signup actions to correctly handle phone number redirection and date of birth formatting.
- Introduced a new user-actions file to implement user verification logic.
- Added an auth guard to restrict access based on user roles.
- Enhanced the auth configuration to include user roles and language settings.
- Improved validation schemas for user input in the signup form.

lib/auth-guard.ts

@@ -0,0 +1,13 @@
+import { auth } from "@/lib/auth";
+import { redirect } from "next/navigation";
+import { headers } from "next/headers";
+
+const session = await auth.api.getSession({
+	headers: await headers(),
+});
+export async function AdminAuthGuard() {
+	if (session?.user.role !== "ADMIN") {
+		return redirect("/login");
+	}
+	return true;
+}