Biome

[smorimoto]

This PR introduces Biome to CI. This allows you to perform format and lint checks on several file types. Actually, it found some issues.

https://biomejs.dev

Remember to use hide white space mode to make the review easier.

[cuihtlauac]

Thanks @smorimoto. This is interesting; however, I have mixed feelings about it.

I'm a strong supporter of automated checks. However, the proposed changes only include whitespace, line breaks, and optional semicolumns. Did I miss something? Tidying this way is acceptable, but having a tool to do that feels overkill. Do those files change often enough to use an automated tool?

Additionally, if we were to use such a tool, we should be able to run it locally, like we do with ocamlformat. However, if I'm correct, that would add Node.js to our list of development dependencies. Isn't it a lot for that kind of change?

[smorimoto]

Biome does not require the Node.js ecosystem: https://biomejs.dev/guides/manual-installation