Desktop: Add a fullscreen window mode

[timon-schelling]

f11 is not usable on mac for this, browsers use cmd + strg + f.
now opted for cmd + strg + f on mac.

Closes #3510

[timon-schelling]

@Keavon I don't think you need to do a full review. Desktop changes are really strait forward. But a opinion on macro changes would be helpful.

[Keavon]

• When hitting F11 after being in fullscreen, we get an inset window:

• The title bar should show the Exit Fullscreen button in place of Minimize/Maximize/Close when fullscreen
• Replace the input macro's new attribute named active with its inverse named disabled
• Clean up the input macro by replacing its patching logic used for scroll preferences with disabled