Extend the recently-added Cubic spline interpolation module (#1577) with a complimentary Bezier module

• https://en.wikipedia.org/wiki/B-spline
• https://ocw.mit.edu/courses/electrical-engineering-and-computer-science/6-837-computer-graphics-fall-2012/lecture-notes/MIT6_837F12_Lec01.pdf
• http://scaledinnovation.com/analytics/splines/aboutSplines.html
• https://github.com/chartjs/Chart.js/blob/6a250de81dd0ebcd66014911460d3076d41e8737/src/helpers/helpers.curve.js#L121-L154
• https://en.wikipedia.org/wiki/Monotone_cubic_interpolation