API: As frontend I want to know whether the authentication has been activated, not activated or deactivated for a given plugin

[EkimoCode]

As this is a property related to the plugin I would return it in the plugin object

I suggest to expose a property with these values:
0 = not activated => intial state.
1 = Incomplete Configuration=> project is created (secret and id) but there is no openAI token (see #15)
2 = deactivated => user configured it, but deactivated it
3 = active
the property might be an int enum.
An alternative would be to use two booleans, like IsOAuthConfigured and IsOauthActive. Agree with Fabio on which one (issue 61 )