WIP: Added support for Windows Terminal v0.11.1121.0 or newer

[jkrgr0]

In version 0.11.1121.0 of Windows Terminal the profiles.json has been renamed to settings.json (See microsoft/terminal Release notes).

To support this change and also to support older releases, I've added a internal function which determines the configuration file path for Windows Terminal.

[jkrgr0]

I've determined, that also the structure of the profile list has slightly changed. I will adding support for this the next days and keep pushing the changes to this branch. So the pull request is WIP

[JustinGrote]

@wav3 yes there have been many changes, we are working on a complete refactor for 2.0: https://github.com/JustinGrote/MSTerminalSettings/tree/refactor/QuickType

If you get this fixed for the existing implementation, it can be maintained for the 1.0 branch, otherwise you can try the 2.0 preview

[jkrgr0]

To be honest, I didn't even notice the other branches..

On the first view it does not seems to be too complex to fix the settings json for the existing implementation. I will dig deeper in this on the weekend.