Add API to visualize/debug/compare color spaces and colors

ColorSpace.createRenderer() returns a ColorSpace.Renderer which
can be used to visualize multiple color spaces and colors (each
associated with a specific color space) in the same CIE 1931 xyY
chromaticity diagram. This API was used to generate all the
diagrams shown in the documentation.

Bug: 32984164
Test: ColorSpaceTest in CTS
Change-Id: Ic94d939d5cfd563d826701f5e876b67b47ed56ec