feat: add initial Prisma schema for user, authentication, restaurant, and menu entities, and update database connection URL.

prisma.config.ts

@@ -7,6 +7,6 @@ export default defineConfig({
   },
   engine: 'classic',
   datasource: {
-    url: 'postgresql://postgres:root@localhost:5432/zemenu?schema=public',
+    url: 'postgresql://zemenu_db_user:Bx5QvACdW9iMC7k6guIQHZUM60c0a6jZ@dpg-d4n9ekggjchc73buc9qg-a.oregon-postgres.render.com/zemenu_db',
   },
 });