Up near the top right corner of the Extensions tab click on the three dots symbol
Click the third setting from the bottom, Install from VSIX...
Navigate to where you downloaded VSIX file and double click
It ought to work, with all the bells and whistles
Language
This is up to date with the current version of scarpet
Commands
For the use of commands you can just do Ctrl+Shift+P (Cmd instead of Ctrl for those mac users) and input a command you want to execute
|Command |Description |Name |
|:---------:|:-------------:|:-----:|
|scarpet: Copy code to clipboard for Minecraft usage|Copies the whole file to the clipboard and removes comments and adds dollars signs before writing it to the clipboard|scarpet.copyToClipboard
API
All commands are currently supported with this API, and any future commands will also be supported