Add Haversine:distance for Line vs. Point (same as CrossTrackDistance)

[michaelkirk]

• I agree to follow the project's code of conduct.
• I added an entry to CHANGES.md if knowledge of this change could be valuable to users.

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Part of #1181

At first I also made CrossTrackDistance generic so that you could:

- let distance = point.cross_track_distance(line_start, line_end);
+ let distance = point.cross_track_distance::<Haversine>(line_start, line_end);
+ let distance = point.cross_track_distance::<Euclidean>(line_start, line_end);

But I decided to avoid the breaking change for now and rolled it back (since we just released a breaking change 2 hours ago 😅)

At this point, I consider CrossTrackDistance to be wholly redundant with Line x Point distance, but maybe it's worth keeping around just because it's a well know (?) algorithm name people will be searching for. I'm willing to be convinced otherwise though.

[michaelkirk]

I didn't realize that CrossTrackDistance applies to an (infinite) line passing through the given line points, not a line segment. This change is incorrect.