Add DXResourceBindingReadme

Author: nums11

Samples/WinMLSamplesGallery/WinMLSamplesGallery/Samples/DXResourceBindingORT/Docs/DXResourceBindingScreenshot.png

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+# Windows ML Samples Gallery: DX Resource Binding in ORT
+Learn how to bind and evaluate DirectX Resources using ONNX Runtime.
+
+The sample showcases how to create and bind OrtValue objects from ID3D12 Resources using the ONNX Runtime C-API.
+
+<img src="Docs/DXResourceBindingScreenshot.png" width="650"/>
+
+- [Getting Started](#getting-started)
+- [Feedback](#feedback)
+- [External Links](#external-links)
+
+## Getting Started
+- Check out the [source](https://github.com/microsoft/Windows-Machine-Learning/blob/master/Samples/WinMLSamplesGallery/WinMLSamplesGallery/Samples/AdapterSelection/AdapterSelection.xaml.cs).
+- Learn how to [get a list of adapters using DXCore](https://github.com/microsoft/Windows-Machine-Learning/blob/master/Samples/WinMLSamplesGallery/WinMLSamplesGalleryNative/AdapterList.cpp#L12) to your session.
+- Learn how to [create learning model devices from adapters](https://github.com/microsoft/Windows-Machine-Learning/blob/master/Samples/WinMLSamplesGallery/WinMLSamplesGalleryNative/AdapterList.cpp#L46).
+
+## Feedback
+Please file an issue [here](https://github.com/microsoft/Windows-Machine-Learning/issues/new) if you encounter any issues with the Windows ML Samples Gallery or wish to request a new sample.
+
+## External Links
+- [Windows ML Library (WinML)](https://docs.microsoft.com/en-us/windows/ai/windows-ml/)
+- [DirectML](https://github.com/microsoft/directml)
+- [ONNX Model Zoo](https://github.com/onnx/models)
+- [Windows UI Library (WinUI)](https://docs.microsoft.com/en-us/windows/apps/winui/)