Hello everyone
I've made a simple Python script that executes a KWin script while exposing D-Bus methods for it as well - allowing for further customization allowed by a normal KWin script
This script focuses on customizing the screen edges, but it can be modified as you wish (CC0 licensed)

https://gist.github.com/gitfib/9af33dc7e80e20041be79e6b668f5c1a