Based on https://github.com/Microsoft/DataConnectors And:

• https://docs.microsoft.com/en-us/power-query/samples/github/readme
• https://docs.microsoft.com/en-us/power-query/samples/mygraph/readme
• https://docs.microsoft.com/en-us/power-query/handlingauthentication#authentication-kinds
• https://docs.microsoft.com/en-us/powerquery-m/power-query-m-reference

This connector uses OpenId Connect with authentication flow with PKCE.