Masking vs Gathering + tuning

**Is your feature request related to a problem? Please describe.**
For very complicated force calculations, using a mask for distances outside of the cutoff is no longer feasible.
Instead, gathering and scattering are better.
Currently, we always use masks.

**Describe the solution you'd like**
Ideally, this would be tunable...

**Describe alternatives you've considered**
Simply implement a gather + scatter.

**Additional context**
This will only be feasible AFTER a kokkos integration, or similar.