[FR] List sign-in providers and their associated config

**Is your feature request related to a problem? Please describe.**
I have a use-case where I'd like to access the `Client ID` associated to the Github sign-in provider:

The reason for that is this `Client ID` can then be used to manage associated authorizations (orgs for example) with https://github.com/settings/connections/applications/CLIENT_ID

So being able to provide this URL to a user will allow him to go directly there and update authorizations as required

**Describe the solution you'd like**
Apologies if this is already supported, but I couldn't find it
Ideally: being able to list sign-in providers and their associated configuration so that I could have access to this information

**Describe alternatives you've considered**
Didn't really consider any except working around it by copying that ID elsewhere