Add a SwiftUI project for iPadOS

[bofeiw]

Hi,

I created a Calculator App mimicking the iOS Calculator, for iPadOS, using SwiftUI.
It looks like the enlarged version of the iOS Calculator on iPads, and have the basic functions like simple calculations and copy/paste.

Not sure if it can be added to this repo as an example (https://github.com/bofeiw/ios-calculator-clone-for-ipados), so just making an issue instead of PR.

Thanks!

[ivanvorobei]

Hi!
I think you need create PR)