Add multilinestring_segment_manager for segment related methods in multilinestring ranges

[isVoid]

Description

closes #1055

This PR adds multilinestring_segment_manager owning class to track the lifetime of intermediate allocations that has to do with segment iterators. In addition multilinestring_segment_range is added as the non-owning class to the previous class to provide iterators to the segments. The syntax to use this object is like:

auto segment_manager = multilinestrings._segments(stream);
auto segment_range = segment_manager.range();

Then a user can easily access the segments in the multilinestrings with:

for (auto seg : segment_range) {
    auto length = sqrt(dot(seg.a, seg.b));
}

Secondly, this PR includes tests that has empty geometry collections in the input, linestring_polygon_distance now correctly computes nans for these input pairs.

In addition, CUSPATIAL_EXPECTS_VALID_MULTI*_SIZES is relaxed. Valid polygon and ring sizes are only implicitly required but not checked via the size of the arrays since they are insufficient checks. Accordingly, some tests are also relaxed.

Checklist

• I am familiar with the Contributing Guidelines.
• New or existing tests cover these changes.
• The documentation is up to date with these changes.

[harrism]

Nice algorithmic improvement. Some doc suggestions, some questions.

[harrism]

Thanks for the renamings. Looks good.

[harrism]

Does quoting documented symbol names prevent Doxygen from making them into clickable links?

[isVoid]

/merge