Shortcuts to move windows to the one third or two thirds of the screen for KDE.

Now also support to move windows to the 1/3 corner of the screen.

Special thanks: this little work is inspired by UltrawideWindows and reuses some of its code.'

Shortcuts Commands
OneThirdWindows: Move Window to left 1/3 Meta+Shift+J
OneThirdWindows: Move Window to Middle 1/3 Meta+Shift+K
OneThirdWindows: Move Window to Right 1/3 Meta+Shift+L
OneThirdWindows: Move Window to Left 2/3 Meta+Shift+I
OneThirdWindows: Move Window to Right 2/3 Meta+Shift+O
OneThirdWindows: Move Window to Right Up 2/3 Meta+Shift+U
OneThirdWindows: Move Window to Right Down 2/3 Meta+Shift+B
OneThirdWindows: Move Window to Left Up 2/3 Meta+Shift+Y
OneThirdWindows: Move Window to Left Down 2/3 Meta+Shift+V

> Some shortcuts conflict with Bismuth and may conflict with others. Please resign them manually under `System Settings > Shortcuts > Shortcuts > KWin`.