Add cubed sphere test cases

[benegee]

New test cases:

• baroclinic instability
• poor man's tracer advection with AMR (as show at MOW24)

Requires: trixi-framework/Trixi.jl#1918

To test this in the meantime:

• Build and install t8code
  • has to be main
• Build and install libtrixi
  • needs this branch: bg/baroclinic-instability
  • e.g. cmake -DCMAKE_INSTALL_PREFIX=~/install/libtrixi-baro -DCMAKE_BUILD_TYPE=DEBUG -DT8CODE_ROOT=~/install/t8code ..
  • make
  • make install
• Build julia project
  • cd libtrixi-julia-baro
  • e.g. ./libtrixi-baro/bin/libtrixi-init-julia --t8code-library ../t8code/lib/libt8.so ../libtrixi-baro
  • JULIA_DEPOT_PATH=./julia-depot julia --project=.
  • Package manager ]
  • pkg> dev --local Trixi
  • leave Julia, cd dev/Trixi, git switch feature-t8code-cubed-sphere-setup, cd -
  • JULIA_DEPOT_PATH=./julia-depot julia --project=.
  • Package manager ]
  • update
  • maybe downgrade XML2_jll: add [email protected]
  • precompile
• Run test case
  • cd libtrixi-baro
  • LIBTRIXI_DEBUG=all ./bin/trixi_controller_baroclinic_c ../libtrixi-julia-baro ./share/libtrixi/LibTrixi.jl/examples/libelixir_t8code3d_euler_baroclinic_instability.jl