Support simple graphics structs in Ravenwood, with CTS.

Insets, Point, PointF, Rect, and RectF are all foundational structs
that don't rely on any complex logic, so they're prime candidates to
support for use by Ravenwood host-side tests.

Based on analysis of existing test code, they're also high-usage
classes that would help enable many "small" tests.

Bug: 292141694
Test: atest CtsGraphicsTestCasesRavenwood CtsGraphicsTestCases
Change-Id: I715d7e03187d651c506bd540e4d1735d56c27ec8