[canvaskit] add audio asset support to skottie-bindings

Change-Id: If4c36f0261a18ed068cd745a4c454c127d0e96bd
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/360916
Reviewed-by: Florin Malita <fmalita@chromium.org>
Reviewed-by: Kevin Lubick <kjlubick@google.com>
Commit-Queue: Jorge Betancourt <jmbetancourt@google.com>
5 files changed