Performance boost

System Info:
OS: Arch Linux
WM: i3 (X11)
Python 3.12.3

Issue:
1- xborders uses the set_wmclass which is deprecrated according to GTK doc:
(https://docs.gtk.org/gtk3/method.Window.set_wmclass.html)

2- xborders is not process aware and xborder process can stack up virtually infinitely

Not much but still better to have process-aware xborders because every time the WM is refreshed another instance of borders is created