Use classical Fable libraries

[MangelMaxime]

Hello @Krzysztof-Cieslak , today I worked on a VSCode extension and used the "classical" Fable libraries like:

• generated types from ts2fable
• Fable.PowerPack for promise
• etc.

I wonder if you would be interested if I try to port this extension to it ? I propose to test it on this extension because it's smaller compared to ionide-vscode-fsharp :)