Assets ruleset update v7

[CodeWringer]

• [x] Rename and relabel: "possession/item" -> "asset"
• [x] Remove item grid
• [x] Implement new sections:
  • [x] Worn & Equipped
  • [x] Luggage
  • [x] Property
• [x] Every point of strength now increases the carrying capacity by 3, down from 6.