Add Image SyncFence setter test coverage

- move SyncFenceUtil to libs/ for general use
- add fence setter cts cases in ImageWriterTest file

Bug: 220029364
Test: this
Change-Id: I67b707f39abc41333ec2372b9574b4f0c958bd82
Merged-In: I67b707f39abc41333ec2372b9574b4f0c958bd82
(cherry picked from commit 0ce485d339f425b3d253b09a1a095a2b51993a1f)
6 files changed