CI: Add FreeBSD build tests for staged commits #140

Job	Run time
source-maintenance-tests	3m 18s
CodeQL-tests	34m 57s
functionality-tests	17m 24s
build-tests(ubuntu-22.04,gcc,default)	12m 51s
build-tests(ubuntu-22.04,gcc,minimal)	7m 5s
build-tests(ubuntu-22.04,gcc,maximus)	14m 46s
build-tests(ubuntu-22.04,clang,default)	14m 40s
build-tests(ubuntu-22.04,clang,minimal)	8m 30s
build-tests(ubuntu-22.04,clang,maximus)	17m 5s
	2h 10m 36s

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