Code to plot general cross-sections

[oceandie]

Adding python code to plot general (i.e., not just along i / j grid directions) cross-sections of z-partial steps (zps), hybrid s-transitioning-to-z (szt) and Muli-Envelope s (MEs) models. For now, the code is added to this repository:

https://github.com/oceandie/local-ME_SE-NEMO

I leave to @jdha to include the code in this repository as he thinks is better.

The code can plot cross-sections of

1. only model levels and model bathymetry (https://github.com/oceandie/local-ME_SE-NEMO/tree/main/src/plot/vsec/vcoord)
2. model levels and model bathymetry and a tracer field (https://github.com/oceandie/local-ME_SE-NEMO/tree/main/src/plot/vsec/Tsec)

The code should be adapted for the specific needs of the analysis.

[oceandie]

Hi @jdha, let me know if you have any question/doubt related to this code ...