Basic `inputminted` support

[jojo2357]

Fix #3540

Right now, it has a hardcoded list, cannot find custom lexers, and does not enforce extension correctness. The per-language extensions are all in there. It could be refactored into an enum, but for future proofing I am leaving it as a class.

Let me know if I am on the right track here

[jojo2357]

How about hardcoding the partial list from Overleaf and then fetching the rest on the fly? That way even without pygments there will be some autofill

[PHPirates]

Agree, a small default list as backup would be fine