Added CI GitHub workflow #3

Job	Run time
build (TestCore, ubuntu-22.04, 10.0.x)	1m 13s
build (TestCore, ubuntu-22.04, 8.0.x, --netcore=net8.0)	1m 21s
build (TestCore, macos-15, 10.0.x)	1m 4s
build (TestCore, windows-2022, 10.0.x)	2m 23s
build (TestCore, macos-15, 8.0.x, --netcore=net8.0)	1m 13s
build (TestCore, windows-2022, 8.0.x, --netcore=net8.0)	2m 50s
build (Test, windows-2022, 10.0.x)	2m 40s
	12m 44s

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