Add VRChat and GitHub packages to Unity project

Assets/VRCSDK/Dependencies/VRChat/Editor/Components/EditorHandling.cs

@@ -0,0 +1,17 @@
+using UnityEditor;
+using UnityEngine.SceneManagement;
+
+[InitializeOnLoad]
+public static class EditorHandling
+{
+    static EditorHandling()
+    {
+        UnityEditor.SceneManagement.EditorSceneManager.sceneOpened += SceneOpenedCallback;
+    }
+
+    static void SceneOpenedCallback( Scene scene, UnityEditor.SceneManagement.OpenSceneMode mode)
+    {
+        // refresh window when scene is opened to display content images correctly
+        if (null != VRCSdkControlPanel.window) VRCSdkControlPanel.window.Reset();
+    }
+}