v21.1 Wild Drop Items 1.0

This script adds in Wild Drop Items, allowing for Wild Pokémon to drop specially defined items in the PBS upon fainting. They do not have to be the same as the items Wild Pokémon might generate with.

The script is plug and play, you just need to add in the PBS information WildDropCommon, WildDropUncommon, and WildDropRare, used in the same way as the WildItem version. (You don't have to define all three.)
The base rate is [50,5,1], but if all three properties are the same then it is a 100% rate.
Check the def pbFaint in the script if you wish to modify the mechanics further or change the windowskin colour to dark mode.