Ship 6 divviup-cli binaries

[tgeoghegan]

Builds divviup-cli for Windows, macOS and Linux, across x86_64 and aarch64. The resulting executables are attached to the release, as in https://github.com/divviup/divviup-api/releases/tag/0.3.7.

Part of #492

[tgeoghegan]

There's some outstanding problems here:

• Windows binaries get flagged as malware by Chrome and Edge when you download them
• macOS binaries can't be run all that easily because they're not notarized or otherwise signed

We should do some research on this and maybe invest more effort in smoothing this out, but for now I want to get this action checked in.

[tgeoghegan]

We now require that one of the features aws-lc-rs or ring be enabled. The former is enabled by default, so the upshot is that --no-default-features won't work anymore. I changed the CI script accordingly.

[tgeoghegan]

My preference would be to automatically select feature ring if the target is Windows and aws-lc-rs otherwise, but you can't do that in cargo yet.

[divergentdave]

It's a bummer the Windows runner images don't include NASM and Ninja, I assumed they would have.

[inahga]

Nice.

Any reason we wouldn't default to ring in all cases?

[tgeoghegan]

Per discussion elsewhere, we have a preference for aws-lc-rs because it has more rigorous formal verification, more features and is backed by AWS' formidable cryptography engineering team. But I think ring is good enough for this Windows target.