Draft: New Redis extension

[hanspagel]

This PR has a rewrite of the Redis extension. On my way, I wanted to and had to refactor a lot of core things, too. Eventually, it became a super huge PR. I’ve created and merged a new PR #288 for the unrelated changes.

I still see a few areas I’d like to improve.

Changes

• Rewrite of the Redis extension
• Removes the y-redis dependency
• Syncs Awareness states between instances

Tasks

• Get the test suite running stable

Known issues

• getConnectionCount() returns the number of connections to the current instance
• getDocumentsCount() returns the number of connections to the current instance
• closeConnections() closes connections on the current instance

[hanspagel]

I migrated more tests over to AVA, to test if it really works with more tests … and turns out it’s flaky again.

avajs/ava#2947 ✅

Reminder to myself: Never work with Node.js again. People are nice.

[gaelbonjour]

Hi :)
Would love to see this rework of the redis extension in action for the awareness being missing on the current implem is a huge blocker for our use case.

[hanspagel]

Time to merge. :-)