Support for OpenID Connect

[slrsoft]

Hi for basic authentication OpenID Connect is now required for endpoints such as the Azure V2 endpoint. Any plans to implement this in Simpleauth - I am using it for several customer facing Apps and it works very well.

With the need to support Office 365 user authentication I now need to implement OpenID Connect and it is a real shame to have to move to another libary.

Any thoughts?
All the best,
Ian

[x1ddos]

@slrsoft care to create a pull request?