feat: move biome_lsp/converters to a separate crate

[Princesseuh]

Summary

biome_lsp has a lot of nifty converters and tools for working with biome_rowan's structs and converting them to LSP formats. Unfortunately, biome_lsp is a private crate, so none of those tools were exported.

This PR moves those utilities into a separate biome_lsp_converters crate that is public, so that people (just me, maybe) can use them.

Test Plan

Moved the tests as well, so the same testing strategy still applies.

[codspeed-hq]

CodSpeed Performance Report

Merging #4407 will not alter performance

_{Comparing Princesseuh:main (060160a) with main (559128f)}

Summary

✅ 99 untouched benchmarks

[ematipico]

We have a task just new-crate that updates this file: https://github.com/biomejs/biome/blob/main/knope.toml

Can you update it manually and add the new crate? It will help with automation release.

Finally, run just f to format the cargo files (you might need to run just install-tools to install taplo)

[Princesseuh]

Should be done! Let me know if I need to update anything else.