ACP client authentication

ACP client authentication overview
The purpose of this topic is to provide an overview of the OAuth client authentication process. It also lists client authentication methods supported by Authorization Control Plane.
Client secret authentication methods
Description of the ACP client_secret based authentication flow
Client authentication using private_key_jwt
Description of the ACP private_key_jwt based authentication flow
Client authentication set to none and with the use of PKCE
Descriptions of ACP client authentication set to none and with the use of PKCE
mTLS-based client authentication
Description of the ACP mTLS-based OAuth client authentication flow