add simple runtime; fix the issue of crashing when creating file and folder; some tweaks

Editor/assets/scenes/demo.scene

@@ -1,12 +1,21 @@
 Scene: Scene Name
 Environment:
-  AssetHandle: 17073147362577408906
-  Light:
-    Direction: [-0.314, -0.941, -0.209]
-    Radiance: [0, 0, 0]
-    Multiplier: 1
+  AssetHandle: 5211537204242875091
 Entities:
-  - Entity: 3696833073589069488
+  - Entity: 15706224176559717512
+    Parent: 0
+    Children:
+      []
+    TagComponent:
+      Tag: Cube
+    TransformComponent:
+      Position: [0, 0, 0]
+      Rotation: [0, 0, 0]
+      Scale: [1, 1, 1]
+    MeshComponent:
+      AssetID: 18328012085543462741
+      AssetPath: assets/meshes/Default/Cube.fbx
+  - Entity: 8041206185299282567
     Parent: 0
     Children:
       []
@@ -17,8 +26,11 @@ Entities:
       Rotation: [0, 0, 0]
       Scale: [1, 1, 1]
     SkyLightComponent:
-      EnvironmentMap: 17073147362577408906
+      EnvironmentMap: 5211537204242875091
+      EnvironmentAssetPath: assets/env/venice_dawn_1_4k.hdr
       Intensity: 1
       Angle: 0
+      DynamicSky: false
+      TurbidityAzimuthInclination: [2, 0, 0]
 PhysicsLayers:
   []