[FEATURE]: Visual return when switching windows place with mouse

[TheMachine02]

Summary

Currently, when you move around windows to switch them of place, the script use the most under windows as the target windows. However, a visual return of which windows will be switched with an for exemple outerline would help predictability

A clear and concise description of what you want to happen

When you move windows with the mouse, target windows for place switching is outlined or indicated visually

A clear and concise description of any alternative solutions or features you've considered.

No response

Additional info

No response

[SuperSamus]

kwin-tiling does this:

https://user-images.githubusercontent.com/40663462/172810322-42047a87-c893-4d0d-8300-eef6ca65cd23.mp4