📎 Implement suppression of plugin diagnostics

[arendjr]

Description

Plugin diagnostics currently cannot be suppressed by biome-ignore comments. We need to confirm what syntax we want to use, but I would suggest the following since it's pretty close to regular rules:

// biome-ignore plugin/myCustomPlugin: <reason>

Then the analyzer needs to be extended so the diagnostics are indeed suppressed. It's a relatively well-contained task, but does require some knowledge of the analyzer internals.

[wanghaoPolar]

Hi~ I read the related code on how suppression work, and have some basic idea how to implement this. Can you help to assign this to me? thanks!

I'll draft a simple design doc for review before start coding.

[wanghaoPolar]

hi @arendjr , can you help to check my RFC when you have time? thanks! #4720