refactor(@angular-devkit/schematics-cli): migrate argument parsing to… #2515

Job	Run time
build-e2e-windows	22s
build	18s
lint	2m 5s
Browser Compatibility Tests	-1s
publish-snapshots	-1s
test	-1s
e2e-package-managers	0s
e2e	0s
e2e-snapshots	0s
e2e-windows	-1s
	2m 41s

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