[Interaction] Ability to use a grabbed object

[thestonefox]

At the moment there is only 1 interaction button (e.g. trigger). pressing it does both grab and use.

You cannot grab an object and then use it because if you're grabbing an object you're pressing the interaction button, so releasing it drops the object.

It would be nice to have a grabbed object then press a different button to use the held object.

This also lends itself well to the grab on click, drop on click rather than the hold grab button.

Should be easy enough to implement by having a new button alias (one for grab and one for use)

[thestonefox]

Completed with 7009498