re-add missing config

Tools/Gulp/config.json

@@ -1476,6 +1476,34 @@
                     "../../loaders/src/glTF/1.0/babylon.glTFLoaderUtils.ts",
                     "../../loaders/src/glTF/1.0/babylon.glTFLoaderExtension.ts",
                     "../../loaders/src/glTF/1.0/babylon.glTFBinaryExtension.ts",
+                    "../../loaders/src/glTF/1.0/babylon.glTFMaterialsCommonExtension.ts"
+                ],
+                "doNotIncludeInBundle": true,
+                "output": "babylon.glTF1FileLoader.js"
+            },
+            {
+                "files": [
+                    "../../loaders/src/glTF/babylon.glTFFileLoader.ts",
+                    "../../loaders/src/glTF/2.0/babylon.glTFLoaderUtilities.ts",
+                    "../../loaders/src/glTF/2.0/babylon.glTFLoaderInterfaces.ts",
+                    "../../loaders/src/glTF/2.0/babylon.glTFLoader.ts",
+                    "../../loaders/src/glTF/2.0/babylon.glTFLoaderExtension.ts",
+                    "../../loaders/src/glTF/2.0/Extensions/MSFT_lod.ts",
+                    "../../loaders/src/glTF/2.0/Extensions/KHR_draco_mesh_compression.ts",
+                    "../../loaders/src/glTF/2.0/Extensions/KHR_materials_pbrSpecularGlossiness.ts",
+                    "../../loaders/src/glTF/2.0/Extensions/KHR_lights.ts"
+                ],
+                "doNotIncludeInBundle": true,
+                "output": "babylon.glTF2FileLoader.js"
+            },
+            {
+                "files": [
+                    "../../loaders/src/glTF/babylon.glTFFileLoader.ts",
+                    "../../loaders/src/glTF/1.0/babylon.glTFLoaderInterfaces.ts",
+                    "../../loaders/src/glTF/1.0/babylon.glTFLoader.ts",
+                    "../../loaders/src/glTF/1.0/babylon.glTFLoaderUtils.ts",
+                    "../../loaders/src/glTF/1.0/babylon.glTFLoaderExtension.ts",
+                    "../../loaders/src/glTF/1.0/babylon.glTFBinaryExtension.ts",
                     "../../loaders/src/glTF/1.0/babylon.glTFMaterialsCommonExtension.ts",
                     "../../loaders/src/glTF/2.0/babylon.glTFLoaderUtilities.ts",
                     "../../loaders/src/glTF/2.0/babylon.glTFLoaderInterfaces.ts",