Fastapi server

[GitAashishG]

This pull request introduces a new API server for the Magma multimodal model, enabling vision and language processing via REST endpoints. The changes include server implementation, deployment options, and updates to dependencies and documentation.

API Server Implementation:

• Added a FastAPI-based server (server/main.py) to provide endpoints for health checks, predictions using base64-encoded images, and file uploads. It integrates the Magma model for vision and language tasks.
• Introduced a unified management script (server/magma-server.sh) to simplify running the server directly, deploying with Docker, or setting up as a system service.
• Added a system service management script (server/manage_magma_service.sh) for installing, starting, stopping, and managing the API server as a systemd service.

Deployment Options:

• Added a Dockerfile (server/docker/Dockerfile) for containerized deployment of the API server, including CUDA support for GPU acceleration.
• Included a docker-compose.yml file (server/docker/docker-compose.yml) for managing the Docker-based deployment with GPU support.

Dependency and Documentation Updates:

• Updated pyproject.toml to include server-specific dependencies like fastapi, uvicorn, and python-multipart.
• Expanded README.md with a new "API Server" section, detailing the server's features, deployment options, and usage instructions.
• Added a dedicated server/README.md with comprehensive documentation on the API server's functionality, setup, and deployment methods.

[GitAashishG]

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