maint: added livewatch asset

Assets/Plugins/LiveWatchLite/TowerDefenceDemo/Scripts/MobTriggerZone.cs

@@ -0,0 +1,23 @@
+using System;
+using UnityEngine;
+
+namespace Ingvar.LiveWatch.TowerDefenceDemo
+{
+    public class MobTriggerZone : MonoBehaviour
+    {
+        public event Action<MobMain> OnMobEntered;
+
+        [SerializeField] private ParticleSystem _attackFx;
+        
+        private void OnTriggerEnter(Collider other)
+        {
+            var mob = other.GetComponentInParent<MobMain>();
+            
+            if (mob == null)
+                return;
+            
+            OnMobEntered?.Invoke(mob);
+            _attackFx.Play();
+        }
+    }
+}