Fix warnings and raise UserWarning as error in CI

[rhugonnet]

We had almost 100 warnings! Now all fixed except:

• A RunTime warning of NumPy that needs to be silenced in Rasterio and not here:

/home/atom/miniconda3/envs/geoutils-dev/lib/python3.11/site-packages/rasterio/dtypes.py:214: RuntimeWarning: overflow encountered in cast
    return np.allclose(values, values.astype(dtype), equal_nan=True)

We stopped catching a lot of warnings when modifying warning message during the hackathon (for instance, changing dst_nodata in nodata)! A good way to keep track of them from now on would be to consider UserWarning as an error in pytest: pytest -W error::UserWarning. I've added this as a pytest option in pyproject.toml, and so it will run by default during CI and locally when just writing pytest! 😄

Several warnings allowed to fix some deeper issues, for instance the modification of a Mask's dtype without converting back in some functions! 😅

Also, I added a NeedToImplementWarning class (subclass of FutureWarning, to avoid triggering errors) to raise warning for us to remember to update the interface to GeoPandas as they add new vector methods.

And minor fixes to the API.

EDIT: Change made here instead of #462 by mistake, but doesn't change much (independent)
We mirror the script update in xDEM to parse package versions in CI to avoid failure in Windows and be more flexible in the future. See GlacioHack/xdem#439. See #462 for justification.

Resolves #460
Resolves #459
Resolves #461

[adehecq]

Looks all good ! I just have a few questions.