Implement support for keyspace notifications

[HonakerM]

Is your feature request related to a problem? Please describe.
My project takes advantage of keyspace notifications in redis and I'd like to test them: https://redis.io/docs/latest/develop/use/keyspace-notifications/

Describe the solution you'd like
Keyspace notifications function as expected with the fake client

Describe alternatives you've considered
A clear and concise description of any alternative solutions or features you've considered.

Additional context
I realize this is probably a big ask so no worries on timeline

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[cunla]

Thanks for the feature request! I wasn't aware of this Redis feature, but I can definitely see the value in supporting it.

Is your project open source or commercial? I'd love to learn more if you're able to share.

As you mentioned, it’s a significant feature to implement. If you or the company you're working for are open to sponsoring the development, I'd be happy to prioritize it. Otherwise, I’ll keep it in mind and explore it when possible - but cannot commit to a timeline.

Looking forward to hearing from you!