libmemtrack: Add clang-format upload hook am: 8572eb5caa am: 92d6027c30 am: cf5c45f74c am: b044324bcd am: eed399ac94

Original change: https://android-review.googlesource.com/c/platform/system/memory/libmemtrack/+/2153820

Change-Id: I52447c21494d8262d9a7f272418db1fdc794f02d
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>