Built in oauth2 authentication support

[exo-ai-devops]

I want to connect your mcp server as an integration tool in my chat UI that every client can turn it on and being redirected to a login authentication page that grant him his permission.
Now its not working the only way that I succeed to connect is with bearer token which is not good becuase I dont want the clients to create and use tokens. The efficient solution is like I said above.
Please see if you can add this support thanks !

[openshift-ci]

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