[script][burgle] Added portable trashcan functionality

[hat071af]

Added the ability to use a portable trashcan to dispose of items. To use use loot: trashcan within burgle_settings:

burgle_settings:
  loot: trashcan  # drop | keep | bin | pawn | trashcan   default: keep. trashcan is for using a portable trashcan

Also requires worn_trashcan: and worn_trashcan_verb: to also be set outside of your burgle_settings. Example settings:

worn_trashcan: silversteel bucket
worn_trashcan_verb: tap