Default add item to cargo ammount

Feature Request

please let us change the default amount of an item you add to your cargo from 1000

an option to change the default add 1000 to your cargo to a different item on an item by item bases.

you can add items to your cargo either 1 at a time or 1000 at a time (with the exception of probes)

Adding options to add to your cargo based on other metrics such as clip size would be a good alternative that would achieve mostly the same effect.

You can use modifier keys to control it while double-clicking to add it to your cargo. Ctrl x10, alt x100, ctrl-alt x1000

edit: not suggesting it as a replacement, it's just something i use myself on a regular basis instead of the context menu

Merge pull request #3 from Robert-Munroe/Issue_#2415