Ghost Pipette Mod

--- I've found a number of crashes in the mod since the original release, so please if you use it at all make frequent autosaves. I'll eventually get around to fixing the bugs. Sorry! ---

Adds hotkeys for various ghost / blueprint related features. Intends to make map-view more useful.

Features:
* Picker / Pipette for blueprints - gives the player a temporary blueprint with a single entity from the hovered entity.(Shift + Q)
* Selection menu for blueprints of a single entity. (Shift + E)
* Rotate ghosts. (R, Shift + R)
* Switch underground belts from output to input. Works both for existing ghosts and hand-held blueprints. (Ctrl + R)
* Change recipe of ghosts. (Ctrl + R)

The mod gives you temporary blueprints, named "Temporary Blueprint". Such blueprints will disappear when you clear the cursor.

When using this please keep in mind that you can change all hotkeys in Options -> Controls -> Mods. If you are playing with picker-extended it is suggested that you change picker's "Pipette Rename Entity" and "Get next wire" hotkeys. The recipe-change and underground belt type switch inputs are mapped to the same key combination, this seems to work sometimes and sometimes it doesn't, if it doesnt try changing one of them.

Mod is still in an experimental stage, please make frequent autosaves when you are using it especially in multiplayer.