[Feature] Sketchup::EntitiesBuilder - `add_curve` method?

[MSP-Greg]

See

https://forums.sketchup.com/t/my-first-ruby-plugin-to-generate-an-archimedean-spiral-is-executing-too-slowly/279211/15

add-edges was used, but adding them as a curve would certainly be cleaner.

[MSP-Greg]

@thomthom

Also, adding add_circle, add_arc methods (and maybe more) would help people not having to use both 'build' systems.

[nanachi-code]

any update?