Add common utilities #97

Job	Run time
Build and test (Autoconf) (2.72, ubuntu-latest)	3m 31s
Build and test (Devcontainer) (ubuntu-latest)	2m 34s
Build and test (Autoconf) (2.72, ubuntu-24.04-arm)	2m 21s
Build and test (Devcontainer) (ubuntu-24.04-arm)	2m 54s
Build and test (Autoconf) (2.71, ubuntu-latest)	19s
Build and test (Autoconf) (2.71, ubuntu-24.04-arm)	1m 20s
	12m 59s

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