add shader graph samples

Simulation/Assets/Scenes/SampleScene.unity

@@ -205,8 +205,8 @@ Transform:
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   m_GameObject: {fileID: 330585543}
   serializedVersion: 2
-  m_LocalRotation: {x: -0.023386968, y: 0.97039276, z: -0.21629551, w: -0.1049157}
-  m_LocalPosition: {x: 7.950644, y: 22.26866, z: 30.932728}
+  m_LocalRotation: {x: 0.008207553, y: -0.96803826, z: 0.031956684, w: 0.24862294}
+  m_LocalPosition: {x: 25.875372, y: 5.9582253, z: 31.103085}
   m_LocalScale: {x: 1, y: 1, z: 1}
   m_ConstrainProportionsScale: 0
   m_Children: []
@@ -256,6 +256,77 @@ MonoBehaviour:
     m_MipBias: 0
     m_VarianceClampScale: 0.9
     m_ContrastAdaptiveSharpening: 0
+--- !u!1 &397877324
+GameObject:
+  m_ObjectHideFlags: 0
+  m_CorrespondingSourceObject: {fileID: 0}
+  m_PrefabInstance: {fileID: 0}
+  m_PrefabAsset: {fileID: 0}
+  serializedVersion: 6
+  m_Component:
+  - component: {fileID: 397877327}
+  - component: {fileID: 397877326}
+  - component: {fileID: 397877325}
+  m_Layer: 0
+  m_Name: Box Volume
+  m_TagString: Untagged
+  m_Icon: {fileID: 0}
+  m_NavMeshLayer: 0
+  m_StaticEditorFlags: 0
+  m_IsActive: 1
+--- !u!114 &397877325
+MonoBehaviour:
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+  m_CorrespondingSourceObject: {fileID: 0}
+  m_PrefabInstance: {fileID: 0}
+  m_PrefabAsset: {fileID: 0}
+  m_GameObject: {fileID: 397877324}
+  m_Enabled: 1
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+  m_Script: {fileID: 11500000, guid: 172515602e62fb746b5d573b38a5fe58, type: 3}
+  m_Name: 
+  m_EditorClassIdentifier: 
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+  blendDistance: 10
+  weight: 1
+  sharedProfile: {fileID: 11400000, guid: e94e8ed3e159a4b7d8a959b75e0d7a39, type: 2}
+--- !u!65 &397877326
+BoxCollider:
+  m_ObjectHideFlags: 0
+  m_CorrespondingSourceObject: {fileID: 0}
+  m_PrefabInstance: {fileID: 0}
+  m_PrefabAsset: {fileID: 0}
+  m_GameObject: {fileID: 397877324}
+  m_Material: {fileID: 0}
+  m_IncludeLayers:
+    serializedVersion: 2
+    m_Bits: 0
+  m_ExcludeLayers:
+    serializedVersion: 2
+    m_Bits: 0
+  m_LayerOverridePriority: 0
+  m_IsTrigger: 1
+  m_ProvidesContacts: 0
+  m_Enabled: 1
+  serializedVersion: 3
+  m_Size: {x: 11.951292, y: 14.458168, z: 14.759317}
+  m_Center: {x: 0.30848598, y: 2.8442516, z: -1.6932211}
+--- !u!4 &397877327
+Transform:
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+  m_CorrespondingSourceObject: {fileID: 0}
+  m_PrefabInstance: {fileID: 0}
+  m_PrefabAsset: {fileID: 0}
+  m_GameObject: {fileID: 397877324}
+  serializedVersion: 2
+  m_LocalRotation: {x: 0, y: 0, z: 0, w: 1}
+  m_LocalPosition: {x: 24.22, y: 1.9857267, z: 21.76}
+  m_LocalScale: {x: 1, y: 1, z: 1}
+  m_ConstrainProportionsScale: 0
+  m_Children: []
+  m_Father: {fileID: 0}
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 --- !u!1 &410087039
 GameObject:
   m_ObjectHideFlags: 0
@@ -1064,3 +1135,4 @@ SceneRoots:
   - {fileID: 1285198190}
   - {fileID: 586745634}
   - {fileID: 710426005}
+  - {fileID: 397877327}