tests

Add a simple subduction 2d chunk model cookbook #1845

Job	Run time
test_indentation	29s
coverage	3m 53s
test_windows (windows-2022, Release, Visual Studio 17 2022)	2m 15s
test_windows (windows-2022, Debug, Visual Studio 17 2022)	10m 24s
linux-gdb-valgrind (ubuntu-22.04, Debug)	13m 4s
test_linux_and_macos (ubuntu-latest, Release)	1m 36s
test_linux_and_macos_mpi (ubuntu-latest, Release)	2m 16s
test_linux_and_macos (ubuntu-latest, Debug)	2m 7s
test_linux_and_macos_mpi (macos-latest, Release)	2m 15s
test_linux_non_unity_no_optional_dependencies (ubuntu-latest, Debug)	3m 5s
test_linux_and_macos (macos-latest, Release)	4m 28s
test_linux_and_macos (macos-latest, Debug)	2m 29s
test_linux_and_macos (macos-11, Release)	3m 13s
test_linux_and_macos (macos-11, Debug)	3m 30s
linux-gcc_mpi (ubuntu-20.04, Debug)	2m 46s
linux-cmake_mpi (ubuntu-latest, 2.8.12, TRUE, Release)	2m 54s
linux-cmake_mpi (ubuntu-latest, 2.8.12, FALSE, Release)	2m 55s
linux-cmake_mpi (ubuntu-latest, 3.16.x, TRUE, Release)	2m 27s
linux-cmake_mpi (ubuntu-latest, 3.16.x, FALSE, Release)	1m 52s
linux-cmake_mpi (ubuntu-latest, 3.20.x, TRUE, Release)	2m 38s
linux-cmake_mpi (ubuntu-latest, 3.20.x, FALSE, Release)	1m 49s
	1h 12m 25s

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