Renamed WGI_STANDALONE_CONNECTOR_ACCESS as WGI_STANDALONE_CONNECTOR_EXPORTER.

Isolate the websocket implementation in descendant of {WEB_SOCKET_EVENT_I}.
Added very simple echo websocket example.
+ code cleaning.

examples/websocket/ws.ini

@@ -0,0 +1,8 @@
+verbose=true
+verbose_level=INFORMATION
+port=9090
+max_concurrent_connections=100
+keep_alive_timeout=35
+max_tcp_clients=100
+socket_timeout=30000
+max_keep_alive_requests=3000