[WIP] feature: window manipulation
I added window manipulation feature.
Reference material : https://www.xfree86.org/4.8.0/ctlseqs.html (please search with "Window manipulation")
This commit has following lacks:
- restore minimized/maximized window
Movestruct with the current terminal window position
- change terminal windows's z-position and more...
If window manipulation feature will be received, I'm going to implement these.