constexpr everithing! #593

Job	Run time
codecheck / codecheck	45m 24s
docker / docker (fedora39)	20m 32s
conda / conda (ubuntu-20.04)	11m 28s
linux / linux (-doc-mpi-)	42m 2s
docker / docker (rocky8)	24m 11s
conda / conda (macos-13)	22m 24s
linux / linux (-mpi-)	53m 13s
mac / macports (macos-13)	21m 20s
conda / conda (macos-14)	9m 37s
linux / linux (-coverage-mpi-)	1h 2m 38s
mac / macports (+allmodules, macos-13)	27m 28s
mac / macsimple (macos-13)	10m 24s
linux / linux (-debug-)	31m 13s
mac / macsimple (macos-14)	5m 5s
linux / linux (-debug-mpi-)	43m 29s
linux / linux (-intel-)	47m 43s
linux / linux (-pycv-mpi-)	19m 56s
linux / linux (-nvhpc-mpi-)	57m 2s
	9h 15m 9s

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