Add crash_handler.cpp to 'gwp_asan' library am: 3377e90bac

Original change: https://android-review.googlesource.com/c/platform/external/gwp_asan/+/3152722

Change-Id: I74ee2b7940965f17acc08a05a465be70d4c23cd2
Signed-off-by: Automerger Merge Worker <[email protected]>