SDK assumes one authorization server to be used from PRM

[localden]

Describe the bug

This is the current logic:

    if (resourceMetadata.authorization_servers && resourceMetadata.authorization_servers.length > 0) {
      authorizationServerUrl = resourceMetadata.authorization_servers[0];
    }

SDK should offer a way for developers to specify which of the authorization servers to use from the PRM document.

Expected behavior

SDK offers an affordance through which the authorization server can be chosen.