Crypto provider for Rustls

Recently, Rustls was updated to have allow a pluggable crypto provider: https://github.com/rustls/rustls/pull/1405/files.

I believe it would now be possible to plugin `boring` into this. This is appealing as we get the benefits of boringssl as well as rustls - notably, FIPS compliance.

Is there interest in providing such a provider?

Start by reading the linked Rustls pull request about pluggable crypto providers and the existing boring bindings. Determine whether integrating boring as a Rustls provider is feasible and what interface or project changes it would require. Done would be a defined provider implementation or a documented conclusion about the required work.

Written by the indexing model from the issue text.