Implement OIDC client provider for Cognito within wgtauth to allow for Sonador integration with AWS services
Refer to #30 (closed) for background.
A OIDC client provider for AWS Cognito with wgtauth
is needed. Cognito is the IdP provider for AWS and an OIDC client provider would allow for Sonador (and by extension other Oak-Tree systems, like Acorn) to be integrated with native Amazon services under a common set of credentials.