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/register.ts

@@ -1,3 +1,17 @@
+import { myToast } from "./toastify";
+
 export const registerLos = async (data: any) => {
-    console.log(data);
-}
+  await fetch("http://localhost:8002/lose", {
+    method: "POST",
+    headers: {
+      "Content-Type": "application/json",
+    },
+    body: JSON.stringify(data),
+  }).then((response) => {
+    if (response.ok) {
+      myToast("Los erfolgreich registriert!", "success");
+    } else {
+      myToast("Fehler bei der Registrierung des Loses.", "error");
+    }
+  });
+};