Adds functionality to empty a transit pod or put mobs in one

Clicking on a transit station with a grab or harm intent will cause you to attempt to empty the contents of the pod onto the floor, takes 4 seconds

Clicking on a transit station with a grab item in the aggressive state or above will cause you to attempt to stuff the grabbed mob into the pod, takes 6 seconds
EDIT1: Caused stuffing people in pods to stun them for 5 seconds to assist transport of captured persons
Adds breaks to some loops in case there is more than one pod.

Shouldn't happen, but Murphy's law.
Adds and removes some checks in transit tubes

Adds some safety checks when stuffing people in transit tubes
Removes intent check when yanking people out of tubes because it complicates things
New way to prevent saxxing in transit tubes to run from the law
Merge pull request #2010 from JJRcop/transit-tube-interaction

Adds functionality to empty a transit pod or put mobs in one