Build DX12 CLI sample in both speed and size opts #4133

Job	Run time
build-packages	7m 3s
build-solution (Debug, x64)	11m 15s
build-solution (Debug, arm64)	16m 38s
build-solution (Release, x64)	22m 42s
build-solution (Release, arm64)	20m 27s
verify-packages (net7.0)	2m 32s
verify-packages (net6.0)	8m 12s
verify-packages (net472)	1m 36s
run-samples (net7.0)	5m 26s
run-samples (net6.0)	5m 8s
run-samples (net472)	4m 30s
run-tests (net7.0)	9m 16s
run-tests (net6.0)	11m 7s
run-tests (net472)	8m 49s
run-samples-aot (x64)	6m 15s
run-samples-aot (arm64)	3m 43s
run-tests-win2d (Debug, uwp)	9m 51s
run-tests-win2d (Debug, wasdk)	4m 28s
run-tests-win2d (Release, uwp)	8m 27s
run-tests-win2d (Release, wasdk)	6m 53s
run-tests-d3d12ma (net7.0)	6m 18s
run-tests-d3d12ma (net6.0)	5m 45s
publish-nightlies-github	21s
publish-nightlies-azure-devops	50s
	3h 7m 32s

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