Move support power beacons into Airstrike/Nuke.

This allows each instance to close over the individual beacons. Fixes #5455.
Add clock overlay to support power beacons.
Merge pull request #5502 from pchote/support-beacons

Support beacon polish fixes.
add a map upgrade rule for Capture trait renamings

followup of #4021
rename CarpetBomb to Armament and add AttackBomber

followup of #4036