SPIGOT-3482: ProjectileHitEvent for shulker bullet and llama spit

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);
+         }

nms-patches/EntityShulkerBullet.patch

@@ -30,3 +30,11 @@
      protected void b(NBTTagCompound nbttagcompound) {
          BlockPosition blockposition;
          NBTTagCompound nbttagcompound1;
+@@ -287,6 +308,7 @@
+     }
+ 
+     protected void a(MovingObjectPosition movingobjectposition) {
++        org.bukkit.craftbukkit.event.CraftEventFactory.callProjectileHitEvent(this, movingobjectposition); // Craftbukkit - Call event
+         if (movingobjectposition.entity == null) {
+             ((WorldServer) this.world).a(EnumParticle.EXPLOSION_LARGE, this.locX, this.locY, this.locZ, 2, 0.2D, 0.2D, 0.2D, 0.0D, new int[0]);
+             this.a(SoundEffects.gD, 1.0F, 1.0F);