Dirty Clothes

### Added
- **Wetness**: armor now tracks a separate "wet" state from rain or water,
  independent of Dirtiness. It dries off on its own over time — no washing
  needed — and dries noticeably faster near a campfire, fire, soul fire, or
  lava.
- **Tough As Nails integration** (optional — only activates if you have Tough
  As Nails installed): wet armor lowers your in-game temperature, scaled by
  how many pieces are wet. Fully configurable, can be turned off even with
  Tough As Nails present.
- **Soap now also grants a "Freshly Washed" buff** (10 minutes by default)
  after a full-set wash — while it's active, no new dirt builds up at all
  (Wetness still behaves normally).
- New "Wetness" tab in the in-game config screen (6 new tunables: gain
  amount, dry cooldown/amount, heat-source radius/multiplier, wet threshold),
  plus 2 new Tough As Nails tunables under Compatibility.