Fsgrid testing and restructuring #1344

Job	Run time
build_libraries	2m 11s
build_libraries_riscv	2m 58s
build_libraries_appleM1	1m 49s
build_testpackage	2m 7s
build_tools	1m 2s
build_appleM1	2m 54s
build_production_1st_order_space	3m 41s
build_production_1st_order_time	3m 31s
build_ionosphereTests	1m 26s
build_production	3m 34s
run_testpackage	45m 4s
build_riscv	2m 2s
run_ionosphere_LFMtest	1m 33s
check_cfg_files	1m 0s
	1h 14m 52s

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