Introduce a checkbox to resample non-equidistant grids to equidistant.

[Huite]

This allows loading of non-equidistant grids.

This is also more robust for when grids are nearly equidistant (within 0.1%).

By default, non-equidistant grids are not resampled; the checkbox is not ticked.

[Huite]

Interface change is very minor:

[Huite]

The ValueError is caught and shown via a MessageBox:

[Huite]

A simple test-case can be setup with:

import xarray as xr
import imod

# %%

da = xr.DataArray(
    data=[[1, 2], [3, 4]],
    coords={
        "y": [13.0, 10.5],
        "x": [0.5, 3.0],
        "dy": ("y", [-4.0, -1.0]),
        "dx": ("x", [1.0, 4.0]),
    },
    dims=("y", "x"),
)
# %%


imod.idf.save("simple.idf", da)