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

docker-compose.yml

@@ -0,0 +1,43 @@
+services:
+  #  mcs_lose-frontend:
+  #    container_name: mcs_lose-frontend
+  #    build: ./frontend
+  #    ports:
+  #      - "8001:8001"
+  #    environment:
+  #      - CHOKIDAR_USEPOLLING=true
+  #    volumes:
+  #      - ./frontend:/app
+  #      - /app/node_modules
+  #    restart: unless-stopped
+
+  mcs_lose-backend:
+    container_name: mcs_lose-backend_express
+    build: ./backend
+    ports:
+      - "8002:8002"
+    environment:
+      DB_HOST: mysql
+      DB_USER: root
+      DB_PASSWORD: D7Ze0lwV9hMrNQHdz1Q8yi0MIQuOO8
+      DB_NAME: mcs_lose
+    depends_on:
+      - mysql
+    volumes:
+      - ./backend:/mcs_lose-backend
+    restart: unless-stopped
+
+  mysql:
+    container_name: mcs_lose-mysql
+    image: mysql:8.0
+    restart: unless-stopped
+    environment:
+      MYSQL_ROOT_PASSWORD: D7Ze0lwV9hMrNQHdz1Q8yi0MIQuOO8
+      MYSQL_DATABASE: mcs_lose
+    volumes:
+      - mysql-data:/var/lib/mysql
+    ports:
+      - "3308:3306"
+
+volumes:
+  mysql-data: