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/utils/toastify.ts

@@ -0,0 +1,17 @@
+import { toast, type ToastOptions } from "react-toastify";
+
+export type ToastType = "success" | "error" | "info" | "warning";
+
+export const myToast = (message: string, msgType: ToastType) => {
+  let config: ToastOptions = {
+    position: "top-right",
+    autoClose: 5000,
+    hideProgressBar: false,
+    closeOnClick: true,
+    pauseOnHover: true,
+    draggable: true,
+    progress: undefined,
+    theme: "dark",
+  };
+  toast[msgType](message, config);
+};