Update to Minecraft 1.21

By: md_5 <git@md-5.net>

paper-server/nms-patches/net/minecraft/world/entity/projectile/IProjectile.patch

@@ -1,6 +1,6 @@
 --- a/net/minecraft/world/entity/projectile/IProjectile.java
 +++ b/net/minecraft/world/entity/projectile/IProjectile.java
-@@ -26,6 +26,10 @@
+@@ -30,6 +30,10 @@
  import net.minecraft.world.phys.MovingObjectPositionEntity;
  import net.minecraft.world.phys.Vec3D;
  
@@ -11,9 +11,9 @@
  public abstract class IProjectile extends Entity implements TraceableEntity {
  
      @Nullable
-@@ -35,6 +39,10 @@
-     private boolean leftOwner;
-     private boolean hasBeenShot;
+@@ -41,6 +45,10 @@
+     @Nullable
+     private Entity lastDeflectedBy;
  
 +    // CraftBukkit start
 +    private boolean hitCancelled = false;
@@ -22,7 +22,7 @@
      IProjectile(EntityTypes<? extends IProjectile> entitytypes, World world) {
          super(entitytypes, world);
      }
-@@ -44,6 +52,7 @@
+@@ -50,6 +58,7 @@
              this.ownerUUID = entity.getUUID();
              this.cachedOwner = entity;
          }
@@ -30,7 +30,7 @@
  
      }
  
-@@ -170,6 +179,17 @@
+@@ -177,6 +186,17 @@
          this.setDeltaMovement(this.getDeltaMovement().add(vec3d.x, entity.onGround() ? 0.0D : vec3d.y, vec3d.z));
      }
  
@@ -48,7 +48,7 @@
      protected ProjectileDeflection hitTargetOrDeflectSelf(MovingObjectPosition movingobjectposition) {
          if (movingobjectposition.getType() == MovingObjectPosition.EnumMovingObjectType.ENTITY) {
              MovingObjectPositionEntity movingobjectpositionentity = (MovingObjectPositionEntity) movingobjectposition;
-@@ -225,6 +245,11 @@
+@@ -237,6 +257,11 @@
      protected void onHitEntity(MovingObjectPositionEntity movingobjectpositionentity) {}
  
      protected void onHitBlock(MovingObjectPositionBlock movingobjectpositionblock) {