[scenes] Fix all Unity examples to be left handed and remove warnings (#158)

* backup changes in unity scenes

* [scenes] Fix examples to be left handed

* [scenes] Fix some camera in examples

Author: epernod

Core/Resources/ReflectSurface.renderTexture

@@ -10,10 +10,8 @@ RenderTexture:
   m_ImageContentsHash:
     serializedVersion: 2
     Hash: 00000000000000000000000000000000
-  m_ForcedFallbackFormat: 4
-  m_DownscaleFallback: 0
   m_IsAlphaChannelOptional: 0
-  serializedVersion: 5
+  serializedVersion: 6
   m_Width: 1024
   m_Height: 1024
   m_AntiAliasing: 8
@@ -24,6 +22,7 @@ RenderTexture:
   m_GenerateMips: 1
   m_SRGB: 0
   m_UseDynamicScale: 0
+  m_UseDynamicScaleExplicit: 0
   m_BindMS: 0
   m_EnableCompatibleFormat: 1
   m_EnableRandomWrite: 0

Scenes/Demos/Endoscopy/BeamAdapter/Material/Textures/BeamEndoscopeTexture.renderTexture

@@ -10,10 +10,8 @@ RenderTexture:
   m_ImageContentsHash:
     serializedVersion: 2
     Hash: 00000000000000000000000000000000
-  m_ForcedFallbackFormat: 4
-  m_DownscaleFallback: 0
   m_IsAlphaChannelOptional: 0
-  serializedVersion: 5
+  serializedVersion: 6
   m_Width: 2056
   m_Height: 2056
   m_AntiAliasing: 1
@@ -24,6 +22,7 @@ RenderTexture:
   m_GenerateMips: 1
   m_SRGB: 0
   m_UseDynamicScale: 0
+  m_UseDynamicScaleExplicit: 0
   m_BindMS: 0
   m_EnableCompatibleFormat: 1
   m_EnableRandomWrite: 0