[Idea] markdown in js extension

[piscopancer]

I am no expert in creating textmate extensions for vscode, but if you can, i think you would like trying to make syntax highlight for js/jsx/ts/tsx files like below

https://github.com/bashmish/es6-string-css

[RedCMD]

https://marketplace.visualstudio.com/items?itemName=ruschaaf.extended-embedded-languages should do the trick