Document supported hardware architectures

[zamazan4ik]

Hi!

I have checked the documentation but did not find any word about supported architectures - only about supported operating systems.

Could you please put the information about supported architectures to the documentation please? E.e. about supported architectures for different operating systems, some specific requirements to the supported instructions, if you have any (e.g. maybe AVX is required - I do not know).

This kind of information is important for the end-users. I have created the same issue to the Redis-doc repo: redis/redis-doc#2001

Even if you have no limitations on supported platforms and/or instruction sets, please at least write a note which OS-configurations are most battle-tested.

Thanks in advance!