[1.16] Make it run (#3626)

* She compiles!

Also readded the armorstand ticking patch, thanks cat

* Update mob goal api

* Misc fixes to make it run

drop per playing mob spawns for now

Spigot-Server-Patches/Optimize-isOutsideRange-to-use-distance-maps.patch

@@ -290,11 +290,6 @@ index 0000000000000000000000000000000000000000..00000000000000000000000000000000
 +        // Paper end - optimise PlayerChunkMap#isOutsideRange
      }
  
-     public void updatePlayerMobTypeMap(Entity entity) {
-@@ -0,0 +0,0 @@ public class PlayerChunkMap extends IChunkLoader implements PlayerChunk.d {
-         return entityPlayer.mobCounts[enumCreatureType.ordinal()];
-     }
- 
 +    private static double getDistanceSquaredFromChunk(ChunkCoordIntPair chunkPos, Entity entity) { return a(chunkPos, entity); } // Paper - OBFHELPER
      private static double a(ChunkCoordIntPair chunkcoordintpair, Entity entity) {
          double d0 = (double) (chunkcoordintpair.x * 16 + 8);