Is your feature request related to a problem? Please describe.
I maintain https://github.com/i-am-shodan/USBArmyKnife/. This is an open source Ducky like device that implements most of the Ducky3 language specification. In addition end users can extend the language via Ducky script functions as well as in C++ with new commands. The Flipper Zero team is also a group that has implemented other extensions to Ducky scripting.

I'd like to be able to offer some support for syntax highlighting. The project already has a lot of custom commands documented here. It would be great if I could use this extension but also add my custom commands to the settings.json to enable these to be picked up.