refactor(@angular/build): move `getDepOptimizationConfig` into utils … #76

Job	Run time
list	41s
workflow (build-cli)	1m 42s
workflow (modules-builder-tests)	2m 11s
workflow (devkit-core-tests)	1m 30s
workflow (devkit-core-tests-rerun)	1m 44s
workflow (build-unit-tests)	1m 51s
	9m 39s

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