Copy initial set of Graphite precompilation cases from upstream

This will be improved in the near future to be less brittle (e.g.
hardcoded external format metadata), and hopefully share helper code
with Skia more directly.

Credit to robertphillips@google.com for the actual work in this CL. :)

Bug: b/380159947
Test: manual analysis of pipeline precompilation
Flag: com.android.graphics.surfaceflinger.flags.graphite_renderengine
Change-Id: I3d1a352bcb88d3a1f8c54e2e7aceca348d7b0c40