Increase testcoverage on github

[veenstrajelmer]

This pr changed coverage from:

Name                                Stmts   Miss  Cover
-------------------------------------------------------
dfm_tools/__init__.py                  19      0   100%
dfm_tools/bathymetry.py                61      6    90%
dfm_tools/coastlines.py                88     13    85%
dfm_tools/data.py                     140      0   100%
dfm_tools/deprecated_functions.py      35     16    54%
dfm_tools/download.py                 248     40    84%
dfm_tools/errors.py                     2      0   100%
dfm_tools/get_nc.py                   257     85    67%
dfm_tools/get_nc_helpers.py            82     59    28%
dfm_tools/hydrolib_helpers.py         357    101    72%
dfm_tools/interpolate_grid2bnd.py     300     77    74%
dfm_tools/linebuilder.py               51     40    22%
dfm_tools/meshkernel_helpers.py       160     10    94%
dfm_tools/modelbuilder.py             195     47    76%
dfm_tools/modplot.py                  357     49    86%
dfm_tools/observations.py             592     94    84%
dfm_tools/xarray_helpers.py           171     65    62%
dfm_tools/xugrid_helpers.py           343    111    68%
-------------------------------------------------------
TOTAL                                3458    813    76%

To:

Name                                Stmts   Miss  Cover
-------------------------------------------------------
dfm_tools/__init__.py                  19      0   100%
dfm_tools/bathymetry.py                61      6    90%
dfm_tools/coastlines.py                88     13    85%
dfm_tools/data.py                     180      0   100%
dfm_tools/deprecated_functions.py      35     16    54%
dfm_tools/download.py                 248     40    84%
dfm_tools/errors.py                     2      0   100%
dfm_tools/get_nc.py                   257     65    75% (+8%)
dfm_tools/get_nc_helpers.py            82     13    84% (+56%)
dfm_tools/hydrolib_helpers.py         357    101    72%
dfm_tools/interpolate_grid2bnd.py     300     77    74%
dfm_tools/linebuilder.py               51     40    22%
dfm_tools/meshkernel_helpers.py       160     10    94%
dfm_tools/modelbuilder.py             195     47    76%
dfm_tools/modplot.py                  357     49    86%
dfm_tools/observations.py             592     94    84%
dfm_tools/xarray_helpers.py           171     65    62%
dfm_tools/xugrid_helpers.py           345     63    82% (+14%)
-------------------------------------------------------
TOTAL                                3500    699    80%

[sonarqubecloud]

Quality Gate passed

Issues
1 New issue
0 Accepted issues

Measures
0 Security Hotspots
0.0% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarQube Cloud