Initial version of the abi monitoring utilities

Add a generic abitool implementation that is capable of translating
common abi operations like dumping and diffing to concrete tool
implementation.

Also add the cmd line utilities `diff_abi` and `dump_abi`.

Bug: 111449103
Co-authored-by: Jayant Chowdhary <jchowdhary@google.com>
Change-Id: I1c4dedb96f4806ea58cf11786d0e7464e26f3059
Signed-off-by: Matthias Maennich <maennich@google.com>
5 files changed