Import gdbstub_arch-0.1.0 am: 52a992f950 am: e54eca01fa am: bd0fc1143e am: a481b6e84e

Original change: https://android-review.googlesource.com/c/platform/external/rust/crates/gdbstub_arch/+/1783794

Change-Id: I081d45dd2aaba0709cc95c8599fa6d075e9af13d