Support for South Australia

[king-millez]

This one is gonna be the most painful, as South Australia uses IBM's Ustream to deliver content. Usually the streaming platform isn't an issue, however it is in this case because it delivers video chunks in JSON data over a websocket connection.

What we need

• A way to deliver the websocket content on Legistream without making it look different from the other parliaments' m3u8 streams.
• South Australia to be added to the Parliament dropdown
• Possibly use JavaScript to open a websocket connection to display the video from data on the backend, or create a module on the backend that transforms the websocket content into an m3u8 stream, however bandwidth usage could become a problem.

[king-millez]

legistream-backend can already get the data, however it can be inconsistent. Needs more testing: https://github.com/OpenGovAus/legistream-backend/blob/main/legistream_backend/sa.py.