Since the gmxapi `sample_restraint` code is now a subproject of the GROMACS project, it is no longer trivial to fork a new MD plugin project. A reasonable solution could be a skeletal Cookiecutter repository that draws the `sample_restraint` subtree from the GROMACS repository. We could also separate some of the CMake logic, in that case, to better handle bundling of pytest, googletest, and testing infrastructure set-up.