Support multiple displays in 'toggle terminal' keybinding

[lu0]

Next steps/enhancements could include:

• Center the cursor on the window after raising it.
• Support multiple displays (initially for my setup of 1 display left, 1 right).
  • Raise the window in the display the cursor is on.
  • Resize the window accordingly, maybe just maximize it? with gaps :P of course.

Edited from comment posted by @lu0 in #10 (comment)

[lu0]

Added to global project to follow it there, cause my memory/motivation is not doing great these days... months... years?

[lu0]

Support multiple workspaces too, the script opens the window in the last workspace it lived in. The window should be raised in the Current workspace instead.