Added methods to get the [raw](xref:UnityEngine.XR.ARSubsystems.XROcclusionSubsystem.TryAcquireRawEnvironmentDepthCpuImage\(UnityEngine.XR.ARSubsystems.XRCpuImage@\)) and [smoothed](xref:UnityEngine.XR.ARSubsystems.XROcclusionSubsystem.TryAcquireSmoothedEnvironmentDepthCpuImage\(UnityEngine.XR.ARSubsystems.XRCpuImage@\)) depth images independently.
