3D model run for JOSS paper

[nanophyto]

For the JOSS paper it would be nice to illustrate compat with Oceananigans.jl with a plot illustrating a 3D model run.

The idea would be to replicate the example from ClimaOcean modified to include an Agate.jl model.

This example looks promising:
https://github.com/CliMA/ClimaOcean.jl/blob/main/experiments/three_degree_simulation/three_degree_simulation.jl

Things that would be required to implement:

• create a new folder with it's own Project.toml and Manifest.toml
• reproduce existing 3 degree example (CPU)
• include a more descriptive header
• move downloading of data and in painting into separate script
• create a Apptainer image with the relevant (processed) ECCO data and dependencies
• update the code to include a simple Agate.jl model
• add header with the relevant SLURM commands to run it on HPC
• make a pretty plot
• upload Apptainer to Zenodo for reproducibility
• benchmark of CPU run time (?)