📎 UX: Can't run assist rules outside of `biome check`

[dyc3]

Description

I've noticed there's a UX problem regarding assists. Assist rules and lint rules are effectively the same concept for users. (It's still not entirely clear to me what should be an assist rule other than the broad category of "sorting things".) So, users expect that biome lint would also run assist rules, and currently it does not. biome assist also does not exist.

I think the ideal solution here is to have biome lint also run assist rules.

[ematipico]

The assist is currently quite basic, but it has been designed to evolve over time and diverge from linting. I envision the assist to provide all sorts of refactor opportunities that IDEs usually provide, for example:

• inline values
• flip binary operations
• sorting order of class methods when a class extends another
• extraction actions
• etc.

You can read more here: https://microsoft.github.io/language-server-protocol/specifications/lsp/3.17/specification/#codeActionKind

I envisioned these actions to be more IDE-focused and less CLI-focused, with just a sprinkle of enforcement inside the check command.

In fact, a future refactor group won't be forced in CLI, because is meant for IDEs