Explosion / Lightning item friendliness

[anoomolu]

Hiya. To go with the environmentally friendly creepers and chaining creepers tweaks, I thought having a tweak for making dropped items immune could be handy - they wouldn't get destroyed, but instead strewn around the place. I imagine this is possible to an extent with fscript/item_despawn.ini, so no worries if this isn't implemented.

The other relevant item friendliness tweak was for lightning - using Channeling 2 is a blast, but killing a mob with the lightning from a trident causes the drops to be destroyed (also no player-specific drops are given but this is probably out of scope).