Adds UPS compartment to basic PA

Fixes http://smf.cataclysmdda.com/index.php?topic=14.msg77016#msg77016 .

You'd expect PA to make some provision for the UPS, given that the suits are designed to run on them.  3 Encumbrance everywhere from being over-volume (absent a Hauling Frame) seems unduly burdensome.

(The second-gen suits include 16 storage; basic UPS is 10 volume and advanced is 8.)