Add GameCooker events for game files deploy and packaging

Source/Editor/Cooker/GameCooker.h

@@ -10,17 +10,15 @@
 /// </summary>
 API_CLASS(Static, Namespace="FlaxEditor") class FLAXENGINE_API GameCooker
 {
-DECLARE_SCRIPTING_TYPE_NO_SPAWN(GameCooker);
+    DECLARE_SCRIPTING_TYPE_NO_SPAWN(GameCooker);
     friend CookingData;
 public:
-
     /// <summary>
     /// Single build step.
     /// </summary>
     class FLAXENGINE_API BuildStep
     {
     public:
-
         /// <summary>
         /// Finalizes an instance of the <see cref="BuildStep"/> class.
         /// </summary>
@@ -52,7 +50,6 @@ public:
     };
 
 public:
-
     /// <summary>
     /// Gets the current build data. Valid only during active build process.
     /// </summary>
@@ -124,6 +121,21 @@ public:
     /// </summary>
     static Delegate<const String&, float> OnProgress;
 
+    /// <summary>
+    /// Occurs when game files and data is deployed.
+    /// </summary>
+    API_EVENT() static Action DeployFiles;
+
+    /// <summary>
+    /// Occurs when game files and data are deployed and can be post-processed.
+    /// </summary>
+    API_EVENT() static Action PostProcessFiles;
+
+    /// <summary>
+    /// Occurs when game files and data are ready to be packaged. Called only if game is about to packaged, otherwise this step is skipped.
+    /// </summary>
+    API_EVENT() static Action PackageFiles;
+
     /// <summary>
     /// Occurs when building collects assets to cook.
     /// </summary>