[TRIGGER] New Live Stream

[sergio-eliot-rodriguez]

App
Rumble

Trigger
New Live Stream

API docs: https://rumblefaq.groovehq.com/help/how-to-use-rumble-s-live-stream-api

Additional context:

1. Requested as additional trigger to those in [TRIGGER] New Rumble Triggers #12442 (which are blocked awaiting Platform API access)
2. Uses the is_live property of objects inside the livestreams array returned by LiveStream API.
3. This trigger uses the Livestream API, for which we have access. Actually, Rumble test request uses this API.
4. Please use creds with username "pdtest" in 1PW for Rumble

[vunguyenhung]

Hi everyone, all test cases are passed! Ready for release!

Test report
https://vunguyenhung.notion.site/TRIGGER-New-Live-Stream-1d5bf548bb5e819fb86bebcd20df8893