Good morning vietnam!

Added: Auto-mining with Tempest device (Consumes fuel per mining cycle).
Added: Tempest trucks to truck shop and HEMT Box.
Fixed: Buy button now disables its self when HMG Hunter or armed offroad
is selected (Rental only).

Cleaned up the vehicle shop configs since there is no need to have a
billion entries for it. To mine with the Tempest device simply go to a
resource area and use the vehicle interaction menu on it. When mining
the device will have a sound source. Sadly you can't destroy sound
sources without destroying a vehicle so various checks may exit but the
device will stay play a sound for it's lifetime.