Support ARM64 for UWP

Currently, I would like to use LibVLCSharp in my HoloLens 2 project. However, there is no ARM or ARM64 support for the UWP platform.

HoloLens 2 developers.

Add support for ARM or ARM64 (preferably) for LibVLCSharp on the UWP platform.

Update to indicate support if added.

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