SPIGOT-3482: ProjectileHitEvent for shulker bullet and llama spit

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

paper-server/nms-patches/EntityLlamaSpit.patch

@@ -9,3 +9,11 @@
      private NBTTagCompound b;
  
      public EntityLlamaSpit(World world) {
+@@ -143,6 +143,7 @@
+     }
+ 
+     public void a(MovingObjectPosition movingobjectposition) {
++        org.bukkit.craftbukkit.event.CraftEventFactory.callProjectileHitEvent(this, movingobjectposition); // Craftbukkit - Call event
+         if (movingobjectposition.entity != null && this.shooter != null) {
+             movingobjectposition.entity.damageEntity(DamageSource.a(this, this.shooter).b(), 1.0F);
+         }