Add shortcuts

[Anders142536]

There shall be keybinding support. As there are several areas per player planned, the shortcuts should only apply to the "Quick Screenshot"

SHIFT ALT S (Select, Screenshot)

If the selection tool is not in the players cursor, then the player receives the area selection tool. If the player already has the selection tool, then a screenshot of the selected area is taken. If there is no area selected with the selection tool already equipped then a small warning is shown "No area selected". It is not yet clear how to show the warning but if possible it should be shown like the "Out of reach" vanilla message.

SHIFT ALT D (Delete)

Delete the current area selection (of the quick screenshot). If there is no area selected, simply do nothing.

Workflow

This allows for a very nice workflow:

• SHIFT-ALT-S: you receive the selection tool
• LEFT/RIGHT MBT: you select the area to your hearts content
• SHIFT-ALT-S: you do the screenshot. the selection tool is taken from you.
• SHIFT-ALT-D: you delete the area you just selected if you want to remove it again.