[androidkit] initial commit for androidkit

This commit introduces the foundation for android kit.
Included is the ability to make calls to native code through the JNI as well as a wrapper for SkCanvas to be used in the Android view hierarchy.


Change-Id: Id2416776e676210d4600898bada3356a9116eb55
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/393356
Commit-Queue: Jorge Betancourt <jmbetancourt@google.com>
Reviewed-by: Florin Malita <fmalita@chromium.org>
13 files changed