added more utilty packges

Packages/com.jovian.inspector/Editor/Tools/Internal/PlayModeVisibility.cs

@@ -0,0 +1,24 @@
+using System.Collections;
+using System.Collections.Generic;
+using UnityEngine;
+
+namespace InspectorToolkit {
+    public enum PlayModeVisibility {
+        Always,
+        EditMode,
+        PlayMode
+    }
+
+    public static class PlayModeVisibilityExtensions {
+        public static bool IsVisible(this PlayModeVisibility visibility) {
+            switch(visibility) {
+                case PlayModeVisibility.EditMode:
+                    return Application.isPlaying == false;
+                case PlayModeVisibility.PlayMode:
+                    return Application.isPlaying;
+                default:
+                    return true;
+            }
+        }
+    }
+}