Topic on Extension talk:WSOAuth/Flow

I recently created a Github Oauth provider for my organization's wiki (mediawiki 1.37.2, PluggableAuth 6.0, WSOauth 6.0.2), using the PHP League's Oauth2 client for GitHub. Is there interest in adding this as a default option, or are there only two defaults on purpose (e.g. for maintainability)?

Thank you! Please create a pull request on Gerrit and assign me, so I can take a look at it.