MCP Servers: support OAuth2 protected servers

[rbeuque74]

Hello !
Since Model Context Protocol specification 2025-03-26, MCP Servers can be protected with Authorization, handled by OAuth2 protocol.
When adding a MCP Server protected by OAuth2 on Kilo Code, Kilo Code refuse the communication as the SSE endpoint is returning 401 instead of a 200 OK HTTP response.

Could you consider implementing OAuth2 flow to authorize connection directly from Kilo-Code to the MCP Server, without having customers to provide headers manually ?

Thanks
Romain