Hemisphere, Cylinder, and Cone wedge shapes

Currently composite shapes like `Hemisphere`, `Cylinder`, and `Cone` can only be rendered with fully circular bases. There is no easy way to render a quarter-sphere or half-cone.

One solution may be to add a `quarters` option, similar to `Ellipse`. For example, `quarters: 2` would render a half-cone.

**Add a 👍 reaction** to this issue if you would like to see this feature added. Do not add +1 comments — [They will be deleted](https://metafizzy.co/blog/use-github-reactions-delete-plus-1-comments/).

Start by locating the Hemisphere, Cylinder, Cone, and Ellipse shape implementations and tracing how their bases are rendered. Determine how a quarters option would apply to each composite shape, then verify that quarter and half shapes render as requested.

Written by the indexing model from the issue text.