RaZ

[Examples/XRDemo] Added an XR example #1776

Job	Run time
Windows (cl, Debug)	6m 44s
Windows (cl, Release)	9m 17s
Emscripten (emcc, Debug)	3m 43s
Windows (cl, Debug, no audio)	5m 19s
Linux (gcc, Debug)	8m 56s
Emscripten (emcc, Release)	8m 36s
Windows (cl, Debug, no window)	4m 33s
macOS (clang, Debug)	3m 17s
Linux (gcc, Release)	5m 13s
Emscripten (emcc, Debug, no audio)	3m 22s
macOS (clang, Release)	3m 17s
Linux (clang, Debug)	4m 37s
macOS (clang, Debug, no audio)	2m 1s
Linux (clang, Release)	5m 55s
macOS (clang, Debug, no window)	2m 1s
Linux (gcc, Debug, no audio)	4m 56s
Linux (gcc, Debug, no window)	4m 0s
	1h 25m 47s

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