macOS: Keyboard shortcut for switching between two apps in split-view

Question

This has been asked in the past, but the last time this question was asked was in 2015 and I hope things have changed in the meanwhile.

I'm essentially using two (different) apps side-by-side in macOS split-view, and I would like to switch between those two apps using a keyboard shortcut.

Is there any way to achieve this? Or any way to program such a shortcut?