Threedigrid-builder

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- Nothing changed yet.

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- Fix 1D vegetation empty string bug

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- Make package compatible with Python 3.12

- Make package compatible with GDAL 3.4 and 3.6. Note that in GDAL 3.6 refinements where the area exactly matches
the grid may slightly differ from those in GDAL 3.4 and older.

- Add geopackage schematisation to test data

- Use geopackage, instead of spatialite, for tests

- Add geopackage to schematisations tested in integration test

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- Remove python 3.12 from wheel build and set minimum python version to 3.7.

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- Add single vegetation and variable friction/vegetation for 1D elements.

- Add a table for open YZ profile to support 1D variable friction and vegetation.

- Update unit tests and the integration test (bergemeer test).

- Remove the spatialie4 version of the integration test (bergemeer test).

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- Add manhole_indicator field to gridadmin for future export.

- Reduce memory use by reducing DEM mask datatype to int8.