Document supported hardware architectures

Hi!

We are investigating different databases for our solution. And FoundationDB is one of the candidates. And one of the requirements is support of different architectures (at least x86-64 and ARM).

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

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.

Thanks in advance!

Review the existing documentation on supported operating systems and the note about macOS, then determine the supported hardware architectures and any required instruction sets. Document the architecture support for each operating system and record requirements such as required CPU instructions. The issue does not name a documentation file or test to run.

Written by the indexing model from the issue text.