Adopted the nanoseconds timeout precision - in config file added support for ns, us, ms, s timeout precision (without indication, it uses `seconds` precision).
on_timer
This is a basic solution to implement a way to check for time to time for events to notify websocket clients.
Isolate the websocket implementation in descendant of {WEB_SOCKET_EVENT_I}. Added very simple echo websocket example. + code cleaning.
standalone_websocket
standalone