Use this endpoint to dynamically register a client

Dynamically register a client with the OIDC Provider. In the process,
client is able to present a set of metadata, such as a set of valid
redirection URIs. The metadata can either be communicated in a self-asserted
fashion or as a set of metadata called a software statement, which is digitally
signed; in the case of a software statement, the issuer is vouching for the
validity of the data about the client.