Optimize Hoppers

- Lots of itemstack cloning removed. Only clone if the item is actually moved
- Return true when a plugin cancels inventory move item event instead of false, as false causes pulls to cycle through all items.
  However, pushes do not exhibit the same behavior, so this is not something plugins could of been relying on.
- Add option (Default on) to cooldown hoppers when they fail to move an item due to full inventory
- Skip subsequent InventoryMoveItemEvents if a plugin does not use the item after first event fire for an iteration

Spigot-Server-Patches/Bound-Treasure-Maps-to-World-Border.patch

@@ -11,7 +11,7 @@ that is outside happens to be closer, but unreachable, yet another reachable
 one is in border that would of been missed.
 
 diff --git a/src/main/java/net/minecraft/server/StructureGenerator.java b/src/main/java/net/minecraft/server/StructureGenerator.java
-index 34fd7edf..e8263baa 100644
+index 34fd7edfe..e8263baa4 100644
 --- a/src/main/java/net/minecraft/server/StructureGenerator.java
 +++ b/src/main/java/net/minecraft/server/StructureGenerator.java
 @@ -0,0 +0,0 @@ public abstract class StructureGenerator extends WorldGenBase {
@@ -25,7 +25,7 @@ index 34fd7edf..e8263baa 100644
                              if (!flag1 || !world.b(l2, i3)) {
                                  return new BlockPosition((l2 << 4) + 8, 64, (i3 << 4) + 8);
 diff --git a/src/main/java/net/minecraft/server/WorldBorder.java b/src/main/java/net/minecraft/server/WorldBorder.java
-index 632eb1c9..1bb172bb 100644
+index 632eb1c9d..1bb172bbf 100644
 --- a/src/main/java/net/minecraft/server/WorldBorder.java
 +++ b/src/main/java/net/minecraft/server/WorldBorder.java
 @@ -0,0 +0,0 @@ public class WorldBorder {