This extension adds the syntax highlight support for the Driplane's rule files on VSCode. Driplane project can be found on https://github.com/Matrix86/driplane.
Link to this extension on the Marketplace https://marketplace.visualstudio.com/items?itemName=Matrix86.driplane
If you want to change and create the package by yourself to test it locally, you can install Node.js and then vsce:
npm install -g vsce
To build the vsix package:
vsce package
To install it from file:
code --install-extension driplane-version.vsix