[Feature request] Store/Load Multiple Positions

[PhlexPlexico]

Description
Right now the load/store position only goes off of one struct. Instead, we can use an array and shuffle through it in the menus, or even use hotkeys that are initially unassigned to swap from one to the other, and draw on screen with a timeout maybe to indicate whether or not we have swapped slots.

Additional context
Add any other context or screenshots about the feature request here.