Web dashboard

[DanNixon]

Initially I was planning to do this via Home Assistant, but my current best solution is hacky and does not quite have the features I wanted.

An ideal web dashboard should (in order of importance):

• Show video via HLS (with the ability to access the entire history stored by the agent)
• Show video via MJPEG (which is typically better for monitoring due to far lower latency)
• Provide a way to manually trigger an event, being able to see all the parameters of a trigger
• Show that an agent is still alive and possibly it's uptime (via the healthcheck/metrics endpoint)
• Allow restricting a monitor to a date range to make historical viewing easier (easy to do by proxying the HLS playlist file)
• Allow arranging and resizing "monitors"
• Be able to store and recall monitor layouts (server side)
• Not look like garbage

Once done it might be good to remove the basic HLS player from the agent.