Decap CMS OAuth provider for GitHub. The following environment variables must
be set for it to work properly: `ORIGIN`, `CLIENT_ID`  and `SECRET`. For
instructions on how to set up an OAuth app and get `CLIENT_ID` and `SECRET`,
refer to [GitHub's
documentation](https://docs.github.com/en/apps/oauth-apps/building-oauth-apps/creating-an-oauth-app).


Documentation available on [docs.rs](https://docs.rs/oauth_decap_github_lib/latest/oauth_decap_github_lib/).