Change some listed-forces headers to be library-only

Change some listed-forces headers to be library-only

Some analysis tools call functions declared here, so they can't be
module-only (yet). Clients of libgromacs should only use functions
from listed-forces.h.

Moved ftype_is_bonded_potential() accordingly.

This will also make it easier to re-instate SIMD support for angles
and dihedrals, because there has to be an intra-module header that
declares the SIMD versions of those functions, and it cannot also be
an installed header if it depends on simd.h.

Refs #1673

Change-Id: Ia2815b57f712fbeb1e294dbea3231c6c9bfc32dc