Add support for generating MCP server from Openapi spec

[eranco74]

Is your feature request related to a problem? Please describe.
Allow users to leverage existing web APIs with openapi spec (the existing server doesn't have to be in Pythoin or use fastapi)

Describe the solution you'd like
Seems that the the conversion logic is already implemented
https://github.com/tadata-org/fastapi_mcp/blob/main/fastapi_mcp/openapi/convert.py

Describe alternatives you've considered
https://github.com/jlowin/fastmcp/tree/ee68d1429d4fc3cf10271e3b0a4abb1404db3a09?tab=readme-ov-file#openapi--fastapi-generation

Additional context