refactor(@angular/build): move `getDepOptimizationConfig` into utils … #75

Job	Run time
list	42s
workflow (build-cli)	1m 34s
workflow (modules-builder-tests)	2m 17s
workflow (devkit-core-tests)	1m 34s
workflow (devkit-core-tests-rerun)	1m 34s
workflow (build-unit-tests)	1m 44s
	9m 25s

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