Enable simple region checking for cli

[savente93]

Issue addressed

Fixes #638

Explanation

Given that we only support bbox and geom regions in the export CLI, I thought it was appropriate to do the same here. We can add to this over time but then we will need a more concrete proposal for who it should look and what we should support so I think this is okay for now. Then at least people can use the most simple variants.

Checklist

• Updated tests or added new tests
• Branch is up to date with main
• Tests & pre-commit hooks pass
• Updated documentation if needed
• Updated changelog.rst if needed

Additional Notes (optional)

Add any additional notes or information that may be helpful.

[savente93]

Things we want to still add:

• Add all options for drivers, even if we can't yet check that the data type and driver combo is correct
• Check that crs is a valid crs
• Check that the region kind is one that hydromt supports even if we cannot validate it yet, and give better errors there
• See what is up with the setup precip forcing on grid model not being caught

[savente93]

@hboisgon I added your setup_precip_forcing as a test case and it passes here so I am not quite sure what is going on here. Perhaps this indicates that the cli is the problem and not the checking, I'll try and investigate that a bit further if I have some time left today or tomorrow, but the other points we discussed should now be fixed

[savente93]

Discussed briefly with Dirk that it's better to update the data catalog so the CRS like 54009 validates more easily. Should not have any impact on users.

[savente93]

I figured out what the issue was with the grid model precip example Hélène found. The validator was actually only validating the first step in the file provided, not all of them. This is now rectified and it should all work. Very good catch @hboisgon !

[hboisgon]

Nice changes! Thanks @savente93