Implement the radiative and three-body recombination rates given in the NRL plasma formulary

[NRL Plasma Formulary]: https://www.nrl.navy.mil/Portals/38/PDF%20Files/NRL_Formulary_2019.pdf?ver=p9F4Uq9wAtB0MPBwKYL9lw==

The [NRL Plasma Formulary] (pages ∼54–55) contain expressions the radiative recombination rate and the three-body recombination rate, which could be implemented.