[feat/ proposal]: open kit.settings with vscode & add json schema for intellisense support

[alexn-s]

just thought it would be neat if settings could be opened with vscode and had intelli support (json schema)

settings.json

...
 "$schema": "url to schema",
...

[johnlindquist]

Thanks, yeah, organizing settings is definitely on my list. There's some tricky legacy choices I need to navigate around before I can tackle it in full though.