ANTLR support

[ambs]

Hello

Syntax highlight to ANTLR would be very welcome :-)

[KevinBatdorf]

I have to submit the grammar file upstream to the library I'm using (here) and it's a bit dependent on when they merge it in and make a release. They haven't been very active lately so I may end up needing to maintain a fork, unfortunately.

Is this the grammar for ANTLR? I hadn't heard of it until now https://github.com/mike-lischke/vscode-antlr4

[ambs]

Hello, @KevinBatdorf. Exactly, that's the one. I am writing a tutorial for it (https://null.zbr.pt) and every time I need to share the grammar file I need to use the Plaintext. So, it would be helpful.
Of course, I would understand if keeping a fork of the grammar is problematic. It is just a suggestion/wish. Thanks