[DMG24] Full Book Content Upload

[tregolani]

This PR contains all of the data from the DMG24 relevant to player-facing options. These include:

• Custom Background
• Items
  • armors
  • firearms (using the dmg'14 proficiencies so not to double up)
  • gifts
  • poisons
  • potions
  • rings
  • rods
  • scrolls
  • staffs
  • trade goods
  • treasure items
  • wands
  • weapons
  • wondrous items
• Reference statblocks for creatures either added in the DMG24 or referenced by items within it.