Re-enable and update AmmoGeneralizer

Changes

The ammo generalizer was disabled to ease porting to 1.5, this re-enables the code.

Reasoning

The required migrating the comp reloadable stuff, same as several other subsystems. It also required replacing a def-equals check with an instanceof check, as 1.5 no longer provides handy handles to the scene part defs.

Testing

Check tests you have performed:

[x] Compiles without warnings
[ ] Game runs without errors
[ ] (For compatibility patches) ...with and without patched mod loaded
[ ] Playtested a colony (specify how long)

CombatExtended-Continued / CombatExtended

Re-enable and update AmmoGeneralizer #3204

Changes

Reasoning

Testing