Swap out ACE editor for Monaco

[david-poindexter]

Currently the project is using the ACE editor for visualizer template code editing. It would be super nice to swap this out for the Monaco editor (already available in DNN). I'll be happy to take this one on as soon as I am able to complete setup of my local development environment.

[valadas]

Some information in the Stencil slack channel I pinned might make it possible for us to have a monaco web-component in https://github.com/DNNCommunity/dnn-elements so if efforts come for this issue, doing it there would benefit more than just this project. Feel free to ping me up if anyone decides to tackle this before I do as I would have some pointers to help implement it...

[david-poindexter]

@valadas I have already started creating a web component with Monaco, so you can assign that one to me if you are going to create an issue on dnn-elements. Otherwise, I will try to remember to log an issue for it there.