Containerize services and add reverse proxy

[rensortino]

This pull request introduces Docker-based deployment for ServStat, for better portability and ease of configuration. It containerizes the backend and frontend, adds a docker-compose.yml for orchestrating services, and updates the documentation to recommend Docker deployment. The backend container uses a CUDA-based image to allow for GPU monitoring and an Nginx reverse proxy is configured to route requests to the appropriate services.

Dockerization and Deployment

• Added docker-compose.yml to define and orchestrate backend, frontend, and Nginx services, including GPU allocation for backend and custom networking.
• Added Makefile with convenient targets for building, starting, stopping, and managing Docker services.
• Added backend/Dockerfile and frontend/Dockerfile for containerizing both backend and frontend applications.
• Added nginx.conf to configure Nginx as a reverse proxy, routing /stat/ API requests to backend and all other requests to frontend, with error handling and fallback messaging.

Documentation Updates

• Updated README.md to recommend Docker deployment, provide step-by-step Docker instructions, and clarify backend/frontend roles.

Frontend Dependencies update

• Updated frontend dependencies to latest Vite version, and added Vite Vue plugin configuration for compatibility with Vite 6.