Added code to new explosives, renamed some items

Removed dependency "CameraMover", it was only being used for one thing
that didn't even need it (replaced with a simple static camera position)

Renamed current explosive item variables and item names to reflect the
difference between them and the new explosives and to maintain
consistent naming conventions.

Added a set of "IED" explosives and a set of "EMP" explosives. IEDs are
similar to regular explosives (now prefixed "TNT") but are smaller and
craftable using fireworks. EMP explosives act like proximity tasers,
taking out players and vehicle engines (will soon disable vehicles by
destroying a vehicle part, in the future update that will require items
to fix vehicles such as starter motors, batteries and fuseboxes)

Added a new utility function set script file for objects.

Added combinations for the new explosive types.

Fixed a bug with tents, the destroy function wasn't using
Iter_SafeRemove which caused infinite loops when destroying tents in a
loop (such as /deletetents)

Added a new vehicle utility function IsVehicleInRangeOfPoint.