feat(quinn, quinn-proto): add aws-lc-rs-fips feature flag

[M0dEx]

Adds support for aws-lc-rs FIPS mode using a feature flag in quinn and quinn-proto.

[M0dEx]

Seems the tests finished, but the features workflow has an issue due to a missing golang dependency of the FIPS mode.

[djc]

Maybe have a look at how rustls exercises that stuff in CI?

[M0dEx]

Maybe have a look at how rustls exercises that stuff in CI?

It seems the FIPS module has some untrivial dependencies as far as GitHub Actions are concerned (you need to manually install Go on the macos-latest runner, Ninja on the windows-latest runner, etc.)

The rustls project uses only the ubuntu-latest for feature combination checks, but I assume this project had a reason to have those run in a matrix over different OS's.

[djc]

The rustls project uses only the ubuntu-latest for feature combination checks, but I assume this project had a reason to have those run in a matrix over different OS's.

Yes, but it's fine to exempt the fips feature from the OS matrix and only support it on Linux given that's where it mainly makes sense per upstream guidance.

[M0dEx]

The features job should now skip FIPS on WIndows and macOS.

[djc]

Thanks, looks great!