feat(a3_static): Static Weapon Durability Buff

[EidolonForgery]

Changes

• Default Static Weapon Armor 24 -> 200
• Default structural armor 1x -> 3x
• Default explosion shielding: unchanged
• Default Damage Threshold: 0.0099999998 -> 3

Turrets now require either sustained, accurate fire from a heavy weapon like the SM249 or direct impact(s) from an explosive weapon. Any SWS-brand 40mm will do it on direct impact to the weapon's receiver.

closes #260