Attempt #2: Instead of adding a new damage type, allow explosives to provide player-specific lists of damage
- similar to how salvaged hammer has a separate damage list for deployables vs walls
- pass in normal damage vs player damage depending on what is hit
- default to normal damage if player damage is unassigned
- allows better control when trying to untangle the web of melee + bullet + explosive damage from explosives than a single PlayerExplosive damage type provided