Plasma Welcome Center on KDEReview

[Nate Graham]

Hello folks!

I've been working with Aleix on an onboarding wizard for Plasma, based 
on work originally started by Felipe Kinoshita last year.

You can see some screenshots at 
https://invent.kde.org/websites/product-screenshots/-/commit/e300be66e62263c63d8a85ba391bbcc1de691148.

I'd like to target Plasma 5.27 for release and am submitting it for 
KDEReview. The repo is at https://invent.kde.org/plasma/welcome-app.


Nate