fix(yarn) detect yarn berry when running bin

[xg-wang]

Summary

In Yarn 3, binaries should be run via yarn run <bin-name> instead of the assumption of node_modules/.bin/<bin-name>. This is required not only with pnp mode.

Note

I chose to detect .yarnrc.yml because this is how yarn uses yarnPath setup; this may not be required when using corepack, but volta does not support corepack yet.

Ref yarnpkg.com:

Starting from the v2, they must be written in valid Yaml and have the right extension (simply calling your file .yarnrc won't do).

I am very new to Rust, please correct me if there are things that are wrong or can be improved.

Test Plan

Built dev volta and verified it works on one of my yarn berry repo.

Note: cargo test --all --features mock-network seems to be failing because I don't have mockito locally

[charlespierce]

A small naming suggestion, but otherwise this look good, thank you!

[charlespierce]

Oh boo, sorry about that! It looks like GitHub requires us to manually approve the CI on follow-up pushes. And there's a small formatting issue failing the format check CI. Can you run cargo fmt to resolve the formatting?

[xg-wang]

@charlespierce oops sorry I missed the message. I pushed the fmt commit.