Add IdP OIDC authorization option in MCP server settings

[symdeb]

Which client?

Web

The problem

Cannot specify an option such as idp_hint=google to select the IdP to be used and be send with the authorization request to inform auth server to use an OIDC server

Solution you have in mind (optional)

1. Add an "OIDC authorization" option in the authorization setting. let user specify the name:value pair.
   such as idp_hint=google
2. when set automatically add to the textbox scopes: "openid email offline_access" (editable textbox)
3. Send the name:value pair in the authorization request
4. save the id_token in inspector (add an option to inspect/decode it)
5. save the refresh token for offline_access and use it when inspector is restarted to obtain an access token
6. Save any updated id_token upon refresh

Before you submit

• I searched existing issues and this is not a duplicate.
• This is a request for the Inspector itself, not for the MCP specification or an SDK.