Add support for moonc -l?

[RyanSquared]

moonc is the official MoonScript compiler and comes with a builtin linter. Any chance of supporting it?

[lcd047]

Despite various setbacks happening IRL, I am, actually, doing my best to finish the support for async checks (cf. #699). I won't be adding any new checkers for the time being.

Aside from that, adding a checker for MoonScript linting would be pretty straightforward. Making it cope with syntax errors though might well prove impossible. shrug

[RyanSquared]

Making it cope with syntax errors though might well prove impossible.

True that. It honestly might've been easier to just use the parser internally as a Vim plugin, but that would probably be a lot harder than just figuring out where the linter errors.