[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/Use-distance-map-to-optimise-entity-tracker.patch

@@ -117,9 +117,9 @@ index 0000000000000000000000000000000000000000..00000000000000000000000000000000
      // Paper end
  
 @@ -0,0 +0,0 @@ public class PlayerChunkMap extends IChunkLoader implements PlayerChunk.d {
+         this.l = supplier;
          this.m = new VillagePlace(new File(this.w, "poi"), datafixer, flag, this.world); // Paper
          this.setViewDistance(i);
-         this.playerMobDistanceMap = this.world.paperConfig.perPlayerMobSpawns ? new com.destroystokyo.paper.util.PlayerMobDistanceMap() : null; // Paper
 +        // Paper start - use distance map to optimise entity tracker
 +        this.playerEntityTrackerTrackMaps = new com.destroystokyo.paper.util.misc.PlayerAreaMap[TRACKING_RANGE_TYPES.length];
 +        this.entityTrackerTrackRanges = new int[TRACKING_RANGE_TYPES.length];
@@ -161,7 +161,7 @@ index 0000000000000000000000000000000000000000..00000000000000000000000000000000
 +        // Paper end - use distance map to optimise entity tracker
      }
  
-     public void updatePlayerMobTypeMap(Entity entity) {
+     private static double a(ChunkCoordIntPair chunkcoordintpair, Entity entity) {
 @@ -0,0 +0,0 @@ public class PlayerChunkMap extends IChunkLoader implements PlayerChunk.d {
      }