Easy color scheme import process

[thismat]

Currently waiting on Windows Terminal to have a better system to import profile themes.

It's in the pipeline but not quite there yet, adding this for tracking purposes.

https://github.com/microsoft/terminal/issues/8639

[thismat]

https://docs.microsoft.com/en-us/windows/terminal/json-fragment-extensions

Will be looking into this as a way of easily importing the colorscheme into WT.