Add new OC plugin BasicStatistics

[Arnei]

Adds a new Opencast plugin that sends analytical data to the Opencast backend. As such the plugin subscribes to various paella player events, and creates new statistics events in the fashion that Opencast expects, then sends them to the backend in batches.

The basic flow is:

• Wait for Paella event
• If an event was received, check how that would map on an OC statistics event.
• If it is a "playback" or "seek" event, debounce it in order to potentially consolidate events (e.g. if someone is mashing the playback button don't send a ton of events for that).
• Then put events into a queue.
• The VIDEO_WATCHED event is different. It is continuously generated through the TIMEUPDATE event.
• Eventually the queue gets flushed, and the events get send to Opencast.

Putting this as a draft because the backend PR is still a draft.

The related Opencast backend PR: opencast/opencast#7839

Based off of the specification in this github discussion: https://github.com/orgs/opencast/discussions/7620

Note: I just saw that I should add a changeset, will do that shortly.

[changeset-bot]

🦋 Changeset detected

Latest commit: 39c66e7

The changes in this PR will be included in the next version bump.

This PR includes changesets to release 1 package

Name	Type
@asicupv/paella-opencast-plugins	Minor

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