Add CasaExample FBX, update materials & packages

Add a new House asset (Assets/Game/House/CasaExample.fbx) with corresponding meta and folder metadata. Adjust World Canvas material (removed _SPECULAR_COLOR, disabled SHADOWCASTER pass, enabled XR motion vectors flag) and update Save Camera RenderTexture serialized settings. Update SampleScene LFS entry and bump Unity package versions in Packages/manifest.json (several dependency version updates). Also update ProjectSettings (project asset/hash and ProjectVersion to 6000.3.8f1).

Assets/Game Kit Controller/Shaders/World Canvas.mat

@@ -26,7 +26,6 @@ Material:
   m_ModifiedSerializedProperties: 0
   m_ValidKeywords:
   - _ALPHAPREMULTIPLY_ON
-  - _SPECULAR_COLOR
   - _SURFACE_TYPE_TRANSPARENT
   m_InvalidKeywords: []
   m_LightmapFlags: 4
@@ -38,6 +37,7 @@ Material:
   disabledShaderPasses:
   - MOTIONVECTORS
   - DepthOnly
+  - SHADOWCASTER
   m_LockedProperties: 
   m_SavedProperties:
     serializedVersion: 3
@@ -158,6 +158,7 @@ Material:
     - _Surface: 1
     - _UVSec: 0
     - _UseUIAlphaClip: 0
+    - _XRMotionVectorsPass: 1
     - _ZWrite: 0
     m_Colors:
     - _BaseColor: {r: 1, g: 1, b: 1, a: 1}

Assets/Game Kit Controller/Textures/Render Texture/Save Camera.renderTexture

@@ -3,20 +3,29 @@
 --- !u!84 &8400000
 RenderTexture:
   m_ObjectHideFlags: 0
-  m_PrefabParentObject: {fileID: 0}
-  m_PrefabInternal: {fileID: 0}
+  m_CorrespondingSourceObject: {fileID: 0}
+  m_PrefabInstance: {fileID: 0}
+  m_PrefabAsset: {fileID: 0}
   m_Name: Save Camera
   m_ImageContentsHash:
     serializedVersion: 2
     Hash: 00000000000000000000000000000000
+  m_IsAlphaChannelOptional: 0
+  serializedVersion: 6
   m_Width: 256
   m_Height: 256
   m_AntiAliasing: 1
-  m_DepthFormat: 2
-  m_ColorFormat: 0
+  m_MipCount: -1
+  m_DepthStencilFormat: 92
+  m_ColorFormat: 8
   m_MipMap: 0
   m_GenerateMips: 1
   m_SRGB: 0
+  m_UseDynamicScale: 0
+  m_UseDynamicScaleExplicit: 0
+  m_BindMS: 0
+  m_EnableCompatibleFormat: 1
+  m_EnableRandomWrite: 0
   m_TextureSettings:
     serializedVersion: 2
     m_FilterMode: 1
@@ -27,3 +36,4 @@ RenderTexture:
     m_WrapW: 1
   m_Dimension: 2
   m_VolumeDepth: 1
+  m_ShadowSamplingMode: 2