Add Copilot setup steps #16

Job	Run time
build-devcontainer	1m 58s
build (Release, ubuntu-latest)	1m 1s
build (Debug, windows-latest)	1m 58s
build (Debug, macOS-latest)	53s
build (Debug, ubuntu-latest)	55s
build (Release, macOS-latest)	41s
build (Release, windows-latest)	2m 12s
	9m 38s

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