examples: Add d3d11videosink example with Direct2D/DirectWrite interop
Demonstartes the use of d3d11videosink's present signal introduced in gstreamer!2923 (merged) with Direct2D/DirectWrite API interop using the windows crate.
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Demonstartes the use of d3d11videosink's present signal introduced in gstreamer!2923 (merged) with Direct2D/DirectWrite API interop using the windows crate.