Chest Cavity 2.12.2

Additions:
-Fireproof organs are animal organs with good fire resistance
-Brutish Muscles grant exceptional strength, average speed
-Ghasts and Striders now use Fireproof Organs in place of animal organs
-Piglin Brutes, Hoglins, and Ravagers now use Brutish Muscles
-DropRateMultiplier entry in chest cavity types modifies the drop rate for that chest cavity type
-Ghasts have a DRM of 3, Shulkers have a DRM of 5, and zombies have a DRM of .5
-Chest Openers now tell players why the failed to open something

Bugfixes:
-Ghasts were missing their volatile stomachs