Add autoAnimate related properties (#1038)

Author: pandaGaume

3ds Max/Max2Babylon/Exporter/BabylonExporter.Mesh.cs

@@ -599,6 +599,8 @@ private BabylonNode ExportMasterMesh(IIGameScene scene, IIGameNode meshNode, Bab
                                     if (animations.Count > 0)
                                     {
                                         babylonMorphTarget.animations = animations.ToArray();
+                                        babylonMorphTarget.autoAnimate = true;
+                                        babylonMorphTarget.autoAnimateLoop = true;
                                     }
                                 }
                             }

SharedProjects/BabylonExport.Entities/BabylonMorphTarget.cs

@@ -25,5 +25,17 @@ public class BabylonMorphTarget
 
         [DataMember(EmitDefaultValue = false)]
         public BabylonAnimation[] animations { get; set; }
+
+        [DataMember(EmitDefaultValue = false)]
+        public bool autoAnimate { get; set; }
+        
+        [DataMember(EmitDefaultValue = false)]
+        public bool autoAnimateLoop { get; set; }
+        
+        [DataMember(EmitDefaultValue = false)]
+        public int? autoAnimateFrom { get; set; }
+
+        [DataMember(EmitDefaultValue = false)]
+        public int? autoAnimateTo { get; set; }
     }
 }