Since version 1.7, Windows Terminal added support for JSON Fragment Extensions

• Windows Terminal version 1.7 Release
• Windows Terminal version 1.7 Blog post

This allows for a user to put a single file into a local config directory that extends the default configuration JSON.

Pros:

This could streamline the installation to only moving a folder instead of copying and pasting from multiple files, also Windows users are more used to drag and droping instead of editing config files.

Cons:

As "Themes" is a relatively new feature to Windows Terminal, it is not yet implemented in JSON Fragment Extensions, their inclusion seem to be coming until version 1.20 (Source).
This could either mean we can only streamline half of the process at the time, or complicate the installation more by introducing a second method.

I'll add a PR to this issue with the schemes as a JSON Fragment Extension and we can leave it cooking until v1.20 releases and I can add the schemes to the fragment too.

In the meantime I'll leave this issue for consideration.