Add explicit .bzl sources and headers lists for skottie/sksg

(to facilitate atomic repo updates)

Also remove some _INCLUDES (no longer used).

Change-Id: I9788838fb4b837b80a9ac637ab28760f9f4ccbf1
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/211994
Commit-Queue: Florin Malita <fmalita@chromium.org>
Reviewed-by: Ben Wagner aka dogben <benjaminwagner@google.com>
1 file changed