Add "store all" functionality to "take all" button in inventory.

Created by: Xottab-DUTY

Eg. press CrouchKey+TakeAllButton (or, secondly, CrouchKey + SprintKey) and it will store everything to the partners inventory instead of yours. (second is suggested just since SprintKey is binded to TakeAll function)

And/or add optional separate button in the inventory UI for this.