Support of ws sockets

At this moment the WebPubSub only supports the wss protocol. This is obviously the best way to setup a secure connection but in my business field there are devices out there that are not able to connect to wss endpoints due to the lack of local certificate stores on board of the devices.

Is there a way to connect to WebPubSub (now or in the future) to also have the ability to connect lightweight devices that are not capable of having a certificate store on board.

var url = client.GetClientAccessUri($"John", Protocol.Ws);
var url = client.GetClientAccessUri($"John", Protocol.Wss);

Start with the GetClientAccessUri entry point and the Protocol.Ws and Protocol.Wss examples in the issue. Determine how WebPubSub client access URIs currently select the protocol; done means lightweight devices can connect through a ws endpoint without requiring a local certificate store.

Written by the indexing model from the issue text.