PNG Stalkers v16 Door Peek Locked

- Door Peek image is now only head + small hands/claws around a thin edge.
- No big body/long arms on the wall.
- Door Peek hard-opens the doorway by removing the door blocks, because door-state toggling was only playing the sound on some setups.
- Touch Door Peek = attacker spawns.
- Ignore Door Peek 15 seconds = he despawns and no attacker appears.

Commands:
/function pngstalksafe:spawn/jester_door_peek
/function pngstalksafe:spawn/door_peek
/function pngstalksafe:spawn/door_peek_jester
/function pngstalksafe:kill_all
