Add convenience script for determining model parameters

[jburba]

I have a notebook which can be easily ported to a python script which would read in command line arguments or a configuration yaml file of model parameters and return the required model uv plane parameters, $N_u$ and $N_v$. This only requires the uv sampling from the instrument model, the beam, and the desired field of view for the sky model. For now, this only supports Gaussian and Airy beams, but that will need to be improved in the future.

The basic idea is as follows:

1. Set $\Delta u = FoV_{RA}^{-1}$ and $\Delta v = FoV_{Dec}^{-1}$
2. Calculate the aperture function width $\Delta\tilde{A}$
3. Find $N_u$ & $N_v$ s.t.
   1. The model $uv$ plane Nyquist samples the sky (two image-space pixels per minimum fringe wavelength)
   2. The model $uv$ plane also encompasses this Nyquist limit + $\Delta \tilde{A}/2$

Please see section 2.3 of Burba, Sims, Pober (2024) for more details.