Embed DeskHopL mode, enable/disable it using dedicated hotkey

[Scalpos]

Hi.
Would it be possible to have a la DekhopL mode available, toggable by a specific shortkey ? When this mode is activated, there would be no autowitch between computers, it would require Caps Lock to be pressed.
As non-horizontal multi-monitor setup is not (yet ?) supported, it would allow keeping same computer's monitors screens non-aligned and without forcing one to be the primary and on the edge for automatic switching.

[hrvach]

That is a good suggestion, I'll also look into vertical monitors soon. Jan's (@jalmeroth) version has many great ideas and I'll try to pull in some of them (of course, providing full credit).