feat(check): allow ignoring specific languages

[ribru17]

Still TODO: add this as a config option? But maybe it's fine as just a CLI flag, since it is mostly just a QOL change around the directories flag. Plus, someone using the server interactively in an editor will still want diagnostics when opening queries for an ignored language, presumably.

Fixes #271

[clason]

Thanks! That would be enough to address my use case, I think. But to clarify:

Plus, someone using the server interactively in an editor will still want diagnostics when opening queries for an ignored language, presumably.

The reason I am interested in such an option is not that I don't want diagnostics for some files, but that I have some files where the serve will error because there is no parser available. And that may happen in editors as well.

[ribru17]

Oh, like the ABI is too low such that the LSP actually errors on loading the parser? Does it give an error diagnostic in this case? just curious

[clason]

No, my use case is if I don't have the parser installed at all (for various reasons including but not limited to obsolete ABI), but I run checks on a queries/ dir that still contains (archived) queries for that parser. (This is admittedly niche.)