Allow the user to switch out SOMD for GROMACS for the free energy calculations. Shouldn't be too hard as BioSimSpace already supports ABFE with GROMACS. Steps:
[ ] Fully decouple A3FE from SOMD
[ ] Add support for GROMACS set-up (easy) and parsing GROMACS output (harder)
Allow the user to switch out SOMD for GROMACS for the free energy calculations. Shouldn't be too hard as BioSimSpace already supports ABFE with GROMACS. Steps: