Add unit tests for QWebSocket

Added basic unit tests for QWebSocket. Connectivity is not tested yet.

Change-Id: I38d388d289733777e6ff0253e5b201aca99b0b10
Reviewed-by: Kurt Pattyn <pattyn.kurt@gmail.com>
Add unit tests for QWebSocketServer

Change-Id: I9ca38aad22a757437943a72669b7ca2bb5db6b98
Reviewed-by: Kurt Pattyn <pattyn.kurt@gmail.com>