Enhance backend and frontend setup with MySQL integration, Docker configurations, and toast notifications

- Updated .gitignore to include additional environment and build files
- Configured Dockerfiles for backend and frontend with npm install and port exposure
- Added MySQL connection pool and query function in backend services
- Implemented form submission with toast notifications in MainForm component
- Updated package.json and package-lock.json for new dependencies
- Enhanced routing and layout in frontend with toast notifications

frontend/src/components/Home.tsx

@@ -1,6 +1,7 @@
 import "../App.css";
 import Layout from "../layout/Layout";
 import MainForm from "./MainForm";
+import "react-toastify/dist/ReactToastify.css";
 
 function App() {
   return (