build arch-specific binaries for macOS in addition to the universal binary

[bolinfest]

I believe this should fix #47.

[bolinfest]

@bigfootjon any concerns on this one?

[bolinfest]

Hmm, though I suppose I should also update this as part of this PR:

dotslash/website/docs/installation.md

Lines 9 to 18 in 3345dc9

	:::note
	On macOS, we **strongly** recommend running DotSlash as a
	[Universal Binary](https://developer.apple.com/documentation/apple-silicon/building-a-universal-macos-binary)
	rather than an x86 or ARM64 binary. If an x86 binary is running under
	[Rosetta](https://developer.apple.com/documentation/apple-silicon/about-the-rosetta-translation-environment)
	on Apple Silicon and ends up spawning `dotslash`, then for consistency with the
	parent process, this will ensure that the `macos-x86_64` artifact will be run.
	:::

@zertosh do you have any concerns with changing the guidance?

[bigfootjon]

I think guidance is fine as-is, we can change it if users find that it isn't actually the case. Sorry for the slow action on this, I was on recharge

[facebook-github-bot]

@bigfootjon has imported this pull request. If you are a Meta employee, you can view this diff on Phabricator.

[facebook-github-bot]

@bigfootjon merged this pull request in 911cee3.