Squashed commits in eccentricity_visualization_function into a single commit

[SeSodesa]

Individual commit messages can be found below.

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Added the function and started making the logic more general

Function almost works?

Continued writing function

Now it actually almost works

Still an annoying orphan yellow bar in the left edge of the axes.

Added x- and y-labels

Adjusted x-limits and attempted to change font size on axis labels

Added a helper function for setting axis properties

Updated input order in doc comment

Updated doc comment on argument source_points

Added outputs to doc comment