refactor(@angular-devkit/schematics-cli): migrate argument parsing to… #2721

Job	Run time
list	29s
workflow (modules-builder-tests)	1m 51s
workflow (devkit-core-tests-rerun)	1m 21s
workflow (build-unit-tests)	2m 22s
workflow (devkit-core-tests)	1m 26s
workflow (build-cli)	1m 43s
	9m 12s

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