Some fixes

- Fixed hoist chest UID 3028 > 3058
- Added Pig NPC to the map, still misses scripts #701
- Added attacks, voices and imunities to Madareth #700 (missing Sharpshooter Smoke Wave)
- Made Pythius The Rotten into Pythius The RottenNPC and changed its location
- Added default creatures.xml to readme (feel free to make my description better) fixes #697