[particles] add support for multiframe asset bindings

Change-Id: I19df412434e755cbd08883639211372d358f9137
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/540747
Reviewed-by: Florin Malita <fmalita@google.com>
Reviewed-by: Brian Osman <brianosman@google.com>
Commit-Queue: Jorge Betancourt <jmbetancourt@google.com>
4 files changed