tests

Add basic starter tutorial mass conserving and plume chapters #1855

Job	Run time
coverage	3m 45s
test_indentation	40s
test_linux_and_macos_mpi (ubuntu-latest, Release)	2m 37s
test_linux_and_macos_mpi (macos-latest, Release)	2m 17s
linux-gdb-valgrind (ubuntu-22.04, Debug)	3m 2s
test_linux_non_unity_no_optional_dependencies (ubuntu-latest, Debug)	3m 22s
test_linux_and_macos (ubuntu-latest, Release)	2m 30s
test_windows (windows-2022, Release, Visual Studio 17 2022)	2m 23s
test_linux_and_macos (ubuntu-latest, Debug)	2m 6s
test_windows (windows-2022, Debug, Visual Studio 17 2022)	12m 31s
test_linux_and_macos (macos-latest, Release)	2m 38s
test_linux_and_macos (macos-latest, Debug)	4m 25s
test_linux_and_macos (macos-11, Release)	3m 10s
test_linux_and_macos (macos-11, Debug)	3m 39s
linux-gcc_mpi	0s
linux-cmake_mpi	0s
	49m 5s

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