Create An Impersonation Oauth Token

The GitHub User API endpoint `/admin/users/{username}/authorizations` with the POST method allows site administrators to create an impersonation OAuth token for a specific user. This endpoint is part of GitHub Enterprise Server's administrative capabilities and enables admins to generate access tokens on behalf of any user account without requiring their password or existing credentials. The impersonation token can be scoped with specific permissions and is useful for troubleshooting user iss...