Chemistry: Metal fluxes for GEAR and AGORA (and QLA)

examples/ChemistryTests/MetalAdvectionTestGEAR/README

...s/ChemistryTests/MetalAdvectionTestGEAR/advect_metals.yml

examples/ChemistryTests/MetalAdvectionTestGEAR/getGlass.sh

examples/ChemistryTests/MetalAdvectionTestGEAR/makeIC.py

...emistryTests/MetalAdvectionTestGEAR/plotAdvectedMetals.py

examples/ChemistryTests/MetalAdvectionTestGEAR/run.sh

...s/MetalAdvectionTestGEAR/runSanityChecksAdvectedMetals.py

src/chemistry/AGORA/chemistry_additions.h

src/chemistry/AGORA/chemistry_struct.h

src/chemistry/EAGLE/chemistry_additions.h

src/chemistry/GEAR/chemistry_additions.h

src/chemistry/GEAR/chemistry_struct.h

src/chemistry/QLA/chemistry_additions.h

src/chemistry/none/chemistry_additions.h

src/chemistry_additions.h