Examining entities should display their inventory

[Ryan089]

Summary

Examining entities (Shift + hover) should display the inventory of that entity. Individual slots may be hidden, and would instead be replaced by a question mark. For example, items in pockets should not be visible on the UI, and neither should clothing underneath hardsuits.

Goal

• [ ] Shift + hover displays the inventory of entities
• [ ] Individual slots can be hidden based on certain conditions
• [ ] UI closes if the entity moves out of range

Media

The left hand panel of the below image is what we aim to replicate. The right hand panel will be a separate task. (Concept credit: spongie)

Dependencies

#817 is required to be completed first.

[cosmiccoincidence]

Clothing isn't implemented yet so this should probably wait until it is.