fix light issue and dispose IPC after wacvr closed

Assets/Script/Essential/CallAfterDelay.cs

@@ -0,0 +1,26 @@
+
+// Code from https://forum.unity.com/threads/cant-run-my-coroutine-ondestroy.785756/
+// Credit: Kurt-Dekker (https://forum.unity.com/members/kurt-dekker.225647/)
+using UnityEngine;
+using System.Collections;
+ 
+public class CallAfterDelay : MonoBehaviour
+{
+    float delay;
+    System.Action action;
+   
+    public static CallAfterDelay Create( float delay, System.Action action)
+    {
+        CallAfterDelay cad = new GameObject("CallAfterDelay").AddComponent<CallAfterDelay>();
+        cad.delay = delay;
+        cad.action = action;
+        return cad;
+    }
+   
+    IEnumerator Start()
+    {
+        yield return new WaitForSeconds( delay);
+        action();
+        Destroy ( gameObject);
+    }
+}

Assets/Script/Essential/CallAfterDelay.cs.meta

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