Move dependencies parameter to fastmcp.json file

[joe-clickhouse]

This deprecated warning needs to be addressed.

mcp_clickhouse/mcp_server.py:70
  .../mcp_clickhouse/mcp_server.py:70: DeprecationWarning: The 'dependencies' parameter is deprecated as of FastMCP 2.11.4 and will be removed in a future version. Please specify dependencies in a fastmcp.json configuration file instead:
  {
    "entrypoint": "your_server.py",
    "environment": {
      "dependencies": ["clickhouse-connect", "python-dotenv", "pip-system-certs", "chdb"]
    }
  }
  See https://gofastmcp.com/docs/deployment/server-configuration for more information.
    mcp = FastMCP(

Should be pretty easy. Just need to:

1. Remove the dependencies parameter from the FastMCP constructor
2. Add a fastmcp.json file to the project root and re-add the removed dependencies according to: https://gofastmcp.com/integrations/mcp-json-configuration#dependencies