migrate from Atom to VSCode

[toozej]

• [x] go through currently installed extensions, settings, etc. in Atom and convert to VSCode (or delete)
• [x] remove Atom setup from dev-gui role
• [x] remove Atom and add visual-studio-code brew cask package in mac role
• [x] setup repos, install VSCode package in dev-gui role
• [x] export settings file for Mac and for Linux, and copy to correct location using dev-gui role using when: statements

[toozej]

https://marketplace.visualstudio.com/items?itemName=jabacchetta.vscode-essentials

[toozej]

Consider the following plugins

• [ ] https://marketplace.visualstudio.com/items?itemName=haskell.haskell

[toozej]

done in https://github.com/toozej/ansible/commit/6a80cdf7f3b688cb4182de59d341414debddb837