PNG Stalkers v47 Window/Door Music + Scare PNGs

Changes:
- Window Peek Jester now triggers the same random/alternating spawn music.
- Door Jester now triggers the same random/alternating spawn music.
- Added 3 new scare-only PNG stalkers:
  /function pngstalksafe:spawn/scare_face_1
  /function pngstalksafe:spawn/scare_face_2
  /function pngstalksafe:spawn/harvest_spirit
- New scare PNGs do NOT play the songs.
- New scare PNGs stalk/float toward the player a little.
- New scare PNGs vanish after 5, 10, or 15 seconds depending on the spawn cycle.
- Added:
  /function pngstalksafe:spawn/scare_all
