feat(deploy): Add 1Panel deployment configuration

- Add Docker Compose stack for single-server 1Panel deployments
- Add backend and frontend Dockerfiles for 1Panel builds
- Add Nginx and RocketMQ configuration for container orchestration
- Document required environment variables and deployment steps

backend/.env.1panel.example

@@ -0,0 +1,41 @@
+MYSQL_ROOT_PASSWORD=change-me-mysql-root-password
+MYSQL_APP_USER=video
+MYSQL_APP_PASSWORD=change-me-mysql-app-password
+REDIS_PASSWORD=change-me-redis-password
+
+MINIO_ACCESS_KEY=minioadmin
+MINIO_SECRET_KEY=change-me-minio-secret-password
+MINIO_BUCKET=video-platform
+
+USER_JWT_SECRET=change-me-user-jwt-secret-at-least-32-bytes
+ADMIN_JWT_SECRET=change-me-admin-jwt-secret-at-least-32-bytes
+SERVICE_AUTH_TOKEN=change-me-internal-service-token-at-least-32-bytes
+ADMIN_INIT_PASSWORD=change-me-admin-initial-password
+JWT_EXPIRATION=86400
+
+NACOS_USERNAME=nacos
+NACOS_PASSWORD=nacos
+NACOS_AUTH_TOKEN=change-me-nacos-auth-token-at-least-32-bytes-long
+
+GRAFANA_ADMIN_USER=admin
+GRAFANA_ADMIN_PASSWORD=change-me-grafana-password
+
+LOCAL_BIND_ADDR=127.0.0.1
+FRONTEND_BIND_ADDR=127.0.0.1
+WEB_HTTP_PORT=18080
+ADMIN_HTTP_PORT=18081
+GATEWAY_HTTP_PORT=9000
+NACOS_HTTP_PORT=8848
+MINIO_API_PORT=9100
+MINIO_CONSOLE_PORT=9101
+SENTINEL_HTTP_PORT=8880
+PROMETHEUS_HTTP_PORT=9090
+GRAFANA_HTTP_PORT=3000
+
+GATEWAY_JAVA_OPTS=-Xms128m -Xmx256m
+AUTH_JAVA_OPTS=-Xms128m -Xmx256m
+USER_JAVA_OPTS=-Xms128m -Xmx256m
+CONTENT_JAVA_OPTS=-Xms256m -Xmx512m
+COMMENT_JAVA_OPTS=-Xms128m -Xmx256m
+RECOMMEND_JAVA_OPTS=-Xms128m -Xmx256m
+ADMIN_JAVA_OPTS=-Xms128m -Xmx256m