The plugin is intended to provide a OpenMM::Force derived class that does no direct
computation, but instead uses DLPack wrappers around CPU
or GPU OpenMM::Platform data for an initialized instance of OpenMM::Contex, and a
callback interface to perform computations on such data outside the plugin.
The wrappers around the simulation data are intended to be instantiated after the
OpenMM::ContextImpl for a particular simulation has been created.