NetHttpBinding with WebSockets doesn't allow custom Certificate handling

This involves:
1. Calling any custom X509CertificateValidator.Validate class that a user has set on their credentials for verifying the server cert.
2. Using the ClientCertificate that a user has provided on the credentials to authenticate against the server.
3. Most likely adding functionality to the System.Net.WebSockets.Client.ClientWebSocket class to enable certificate handling.