[ManagementClient] Delete All User Authenticators

[benjlevesque]

Describe the problem you'd like to have solved

The Delete All Authenticators endpoint doesn't seem to be available in the ManagementClient

Describe the ideal solution

Make it possible to use the ManagementClient to delete all user's authenticators.

client.deleteAllUserAuthenticators({ id })

Alternatives and current work-arounds

I currently do this using Axios, and it's preventing me from migrating to this library.

[adamjmcgrath]

Thanks for raising this @benjlevesque - let me investigate why that method isn't there and create some work to fix.