Websockets & Event hub

[iLLiCiTiT]

Changelog Description

Added websockets and event hub to ayon api.

Additional review information

Added simple way how to start websocket communication. Also added helper EventHub that does handle registering of handler for events.

Almost same implementation of event hub was added to core in ynput/ayon-core#2178 . This is meant to replace that when needed version of AYON launcher with this python api is required by ayon-core addon.

Testing notes:

The easiest way is to get event hub from ayon api and register callbacks to known topics for example creation of folder.

Example

import ayon_api

event_hub = ayon_api.get_event_hub()

def my_callback(event):
    print(event)
    event_hub.stop()

event_hub.add_callback("entity.folder.created", my_callback)
event_hub.start()
while event_hub.is_running():
    time.sleep(0.1)