Redis event, read and snapshot persistence

[joshua211]

I've played around with redis as a primary persistent database and found redis streams to be good match for event sourcing applications, so I've implemented RedisEventPersistence for EventFlow. While at it, I've also implemented a RedisReadModelStore and RedisSnapshotPersistence. The event persistence requires redis >= v5.0 to use streams, the readmodel and snapshot persistence require the redis search and redis json module, all of which are included in Redis Stack. Querying readmodels is done by using Redis OM, which abstracts the redis search module into LINQ collections.

All integration tests are passing, but require a running docker daemon to setup the TestContainer instance.

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[joshua211]

• The RedisHashBuilder is a pretty complicated class with a lot of different cases and possibilities to do something wrong if anyone were to change it. I would really love to see some unit tests of the class specifically

Added more tests to HashBuilderTests.cs

• I'm moving the documentation to this repository as to have everything combined. Are you up for writing a page or two on the Redis additions? The setup is still raw and has much that is missing, but getting this done will really help making it easier for everyone to use

Sure, let me know if i should make a pull request to the documentation repo or wait until it is moved

Edit Nvm, just saw the docs in this repo. Adding some pages soon.

[joshua211]

Added some documentation to the redis integration part, let me know if anything is missing.

[rasmus]

Just a minor test failing https://github.com/eventflow/EventFlow/actions/runs/3219558430/jobs/5660869142

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