Describe your change:

Addition of a more accurate algorithm to calculate distances between two points on the Earth's surface. This method treats the Earth as an oblate ellipsoid.

Tests can be cross-referenced here - This is a much more precise algorithm than Lambert's but can be used for comparison.
Insert lat1, lon1 lat2, lon2 into the "Inverse" field and "Calculate" to verify tests. s12 value is the geodesic

• [x ] Add an algorithm?
• Fix a bug or typo in an existing algorithm?
• Documentation change?

Checklist:

• [x ] I have read CONTRIBUTING.md.
• This pull request is all my own work -- I have not plagiarized.
• I know that pull requests will not be merged if they fail the automated tests.
• This PR only changes one algorithm file. To ease review, please open separate PRs for separate algorithms.
• All new Python files are placed inside an existing directory.
• All filenames are in all lowercase characters with no spaces or dashes.
• All functions and variable names follow Python naming conventions.
• All function parameters and return values are annotated with Python type hints.
• All functions have doctests that pass the automated testing.
• All new algorithms have a URL in its comments that points to Wikipedia or other similar explanation.
• If this pull request resolves one or more open issues then the commit message contains Fixes: #{$ISSUE_NO}.