GOES ABI Terrain Correction functions

[spestana]

I have some python routines here to perform terrain correction of GOES ABI imagery using a sub-pixel resolution DEM (or any arbitrary resolution DEM). I thought these functions might be useful to add to the goespy library.

Creating this issue to discuss the idea.

[palexandremello]

Hi, Steven.

you probably read my mind, I was working in the parallax effect, but I didn't effectly fix it. and your routines does it. Great!!

We can fuse your work with goes-py and create a new module as toolkit for working with satellite data.

[palexandremello]

We can create a group (slack, telegram, discord) to discuss how to refactoring the code (I would to refactor the goes-py code. it's a "poor" code, add himawari, and how to integrate with goes-orth.

Creating the satellite toolkit to download, fix and plot data.

Everyone read that thread can enjoy us to improve the satellite's community and will be welcome. =D

[spestana]

Should we create a "dev" branch too? And then I can submit a pull request with changes to that branch instead of "main"

My own code needs improvement, I currently wrote it only for ABI Band 14, but can change it to work with all ABI bands.