Fixed light intensity issue that was causing lights to be saturated.

ScriptableRenderPipeline/LightweightPipeline/LightweightPipeline.cs

                 QualitySettings.antiAliasing = m_Asset.MSAASampleCount;
 
             Shader.globalRenderPipeline = "LightweightPipeline";
+
+            // TODO: This is at the moment required for all pipes. We should not implicitly change user project settings
+            // instead this should be forced when using SRP, since all SRP use linear lighting.
+            GraphicsSettings.lightsUseLinearIntensity = true;
         }
 
         public override void Dispose()