Support for client credentials & resource owner password credential flow

[donnytian]

Hi,
Besides some well-known services that using a login page, "client credentials" and "resource owner password credential" flows are also common for custom OAuth v2 implementations.
Any plan to support for them?
Below is an example project I found there. It also support for X.509 client certificates.
https://github.com/IdentityModel/IdentityModel

Thanks,
Donny