Add object folders

Author: D8H

examples/space-shooter/space-shooter.json

@@ -1007,7 +1007,7 @@
         "gridColor": 10401023,
         "gridAlpha": 0.8,
         "snap": true,
-        "zoomFactor": 3.5674189520723494,
+        "zoomFactor": 1.8377776410723985,
         "windowMask": false
       },
       "objectsGroups": [
@@ -6192,76 +6192,91 @@
         "folderName": "__ROOT",
         "children": [
           {
-            "objectName": "Player"
-          },
-          {
-            "objectName": "SpaceBackground"
+            "folderName": "Boss",
+            "children": [
+              {
+                "objectName": "BossBody"
+              },
+              {
+                "objectName": "BossTopArm"
+              },
+              {
+                "objectName": "BossBottomArm"
+              },
+              {
+                "objectName": "BossSuperLaser"
+              }
+            ]
           },
           {
-            "objectName": "CorridorBackground"
+            "folderName": "Background",
+            "children": [
+              {
+                "objectName": "BossBackground"
+              },
+              {
+                "objectName": "SpaceBackground"
+              },
+              {
+                "objectName": "CorridorBackground"
+              },
+              {
+                "objectName": "TilesMechanical1"
+              },
+              {
+                "objectName": "TilesMechanical2"
+              }
+            ]
           },
           {
-            "objectName": "Asteroid"
+            "folderName": "UI",
+            "children": [
+              {
+                "objectName": "Fade"
+              },
+              {
+                "objectName": "GameOver"
+              },
+              {
+                "objectName": "LifeBar"
+              },
+              {
+                "objectName": "ChangeButton"
+              }
+            ]
           },
           {
-            "objectName": "Enemy2"
+            "objectName": "Player"
           },
           {
             "objectName": "PlayerBullet"
           },
-          {
-            "objectName": "HealthPack"
-          },
-          {
-            "objectName": "Explosion"
-          },
-          {
-            "objectName": "Enemy3"
-          },
-          {
-            "objectName": "EnemyBullet"
-          },
-          {
-            "objectName": "Enemy1"
-          },
-          {
-            "objectName": "AttackFlame"
-          },
           {
             "objectName": "PlayerAttackArea"
           },
           {
-            "objectName": "TilesMechanical2"
-          },
-          {
-            "objectName": "TilesMechanical1"
-          },
-          {
-            "objectName": "LifeBar"
-          },
-          {
-            "objectName": "ChangeButton"
+            "objectName": "Asteroid"
           },
           {
-            "objectName": "BossBody"
+            "objectName": "Enemy1"
           },
           {
-            "objectName": "BossTopArm"
+            "objectName": "Enemy2"
           },
           {
-            "objectName": "BossBottomArm"
+            "objectName": "Enemy3"
           },
           {
-            "objectName": "BossSuperLaser"
+            "objectName": "EnemyBullet"
           },
           {
-            "objectName": "BossBackground"
+            "objectName": "AttackFlame"
           },
           {
-            "objectName": "Fade"
+            "objectName": "HealthPack"
           },
           {
-            "objectName": "GameOver"
+            "objectName": "Explosion"
           }
         ]
       },