Add EJS as a dependency and implement form submission in MainForm component

backend/server.js

@@ -3,7 +3,7 @@ import cors from "cors";
 import env from "dotenv";
 env.config();
 const app = express();
-const port = 10001;
+const port = 8001;
 
 app.use(cors());
 app.use(express.urlencoded({ extended: true }));