lordubbe

I experienced heavy warning spam when using Camera.Render in a separate, unrelated system: `You can only call cameraColorTarget inside the scope of a ScriptableRenderPass. Otherwise the pipeline camera target texture...

This PR moves the accessing of cameraColorTarget to OnCameraSetup from AddRenderPasses to get rid of warning spam when using Camera.Render in another object. Not sure when this became necessary, but...