Changing pycv into a proper python package #3333

Job	Run time
docker / docker (fedora39)	20m 18s
codecheck / codecheck	43m 38s
docker / docker (rocky8)	24m 13s
conda / conda (ubuntu-20.04)	11m 31s
linux / linux (-doc-mpi-)	41m 35s
conda / conda (macos-13)	32m 27s
mac / macports (macos-13)	14m 43s
linux / linux (-mpi-)	52m 3s
conda / conda (macos-14)	9m 31s
mac / macsimple (macos-13)	13m 46s
mac / macports (+allmodules, macos-13)	30m 27s
linux / linux (-coverage-mpi-)	1h 5m 12s
mac / macsimple (macos-14)	5m 34s
linux / linux (-debug-)	30m 40s
linux / linux (-debug-mpi-)	41m 59s
linux / linux (-intel-)	46m 25s
linux / linux (-pycv-mpi-)	18m 23s
linux / linux (-nvhpc-mpi-)	1h 1m 7s
	9h 23m 32s

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