feat(testing): add assert_geoseries_coordinates_equal

[JuhoErvasti]

Description

assert_geoseries_equal and assert_geodataframe_equal do not check if geometries have the same z coordinates. If you use the plain Pandas assert_series_equal it does check for z coordinates. This has been used so far, but this allows only exact checking so you can't enable check_less_precise.

This PR adds [assert_geoseries_coordinates_equal](https://github.com/nlsfi/geogen-algorithms/pull/125/commits/ca7d499125a179c91cd1b81009a6a97b9f3497af) which explicitly check that all coordinates including Z match in two GeoSeries.

This is required because in #124 we get an issue where it looks like for some reason depending on the OS (Windows/Linux) you get slightly different coordinates on some vertices (on the millimiter or less scale), leading tests to fail on one OS or the other. This change allows to use the check_less_precise parameter to ignore miniscule differences like this.

Type of change

• Bug fix

• New feature

• Other

• Non-breaking change

• Breaking change

Developer checklist

• A CHANGELOG entry has been included (only when change is visible to users)

[nlssakokorhonen]

Just a minor detail, imho the function name "assert_geoseries_z_values_match" is a bit misleading. I would expect the function to check only z coordinates instead of geometry type and all the coordinates. The code would be easier to read if you can come up with a better name for the function.

[JuhoErvasti]

Good point, I'll change the name.