Implement UWP version of `OS.get_unique_id` function. #1

Job	Run time
📊 Static / Static Checks (clang-format, black format, file format, documentation checks)	2m 27s
🌐 JavaScript / Template (target=release, tools=no)	11m 15s
🍏 iOS / Template (target=release, tools=no)	14m 1s
🤖 Android / Template (target=release, tools=no)	14m 26s
🐧 Linux / Editor w/ Mono (target=release_debug, tools=yes)	28m 37s
🐧 Linux / Editor and sanitizers (target=debug, tools=yes, use_asan=yes, use_ubsan=yes, linker=gold)	31m 22s
🍎 macOS / Editor (target=release_debug, tools=yes)	19m 23s
☁ Server / Linux Headless w/ Mono (target=release_debug, tools=yes)	19m 55s
🐧 Linux / Template w/ Mono (target=release, tools=no)	13m 21s
🏁 Windows / Editor (target=release_debug, tools=yes)	21m 12s
🍎 macOS / Template (target=release, tools=no)	11m 42s
☁ Server / Linux Server w/ Mono (target=release, tools=no)	11m 23s
🏁 Windows / Template (target=release, tools=no)	13m 24s
	3h 32m 28s

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