Refactor parallel communicators, Introduce module_parallel and migra… #17712

Job	Run time
Build with GNU toolchain	8m 18s
Build without LCAO	6m 14s
Build without LCAO and MPI	4m 0s
Build with Intel toolchain	8m 26s
Build extra components with Intel toolchain	15m 9s
Build without ELPA	7m 5s
Build extra components with GNU toolchain	18m 34s
Build with CUDA support	13m 8s
Build without MPI	6m 34s
	1h 27m 28s

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