tests

add velocity infrastructure. #2209

Job	Run time
coverage	1m 58s
test_indentation	24s
test_windows (windows-2022, Release, Visual Studio 17 2022)	1m 33s
test_linux_non_unity_no_optional_dependencies (ubuntu-24.04, Debug)	1m 28s
linux-gdb-valgrind (ubuntu-22.04, Debug)	1m 28s
linux-clang_flang_mpi (ubuntu-24.04, Debug)	1m 17s
test_windows (windows-2022, Debug, Visual Studio 17 2022)	1m 23s
test_linux_and_macos (ubuntu-22.04, Release)	1s
test_linux_and_macos_mpi (ubuntu-24.04, Release)	1m 27s
test_linux_and_macos (ubuntu-22.04, Debug)	1s
test_linux_and_macos (ubuntu-24.04, Release)	1s
test_linux_and_macos_mpi (macos-12, Release)	1m 27s
test_linux_and_macos_mpi (macos-13, Release)	1m 27s
test_linux_and_macos (ubuntu-24.04, Debug)	1s
test_linux_and_macos (macos-12, Release)	1m 27s
test_linux_and_macos (macos-12, Debug)	1m 27s
test_linux_and_macos (macos-13, Release)	1s
test_linux_and_macos (macos-13, Debug)	1m 8s
linux-cmake_mpi	1s
linux-gcc_mpi	1s
linux-clang_gfortran_mpi	1s
linux-gcc_no_apps	1s
	18m 3s

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