Find binaries among build directories, the checkout, and cloud storage
usage: fx ls-buildid [--help|-h] [--verbose|-v] [--remote|-r] BUILD_ID
Searches all build directories and the checkout - and optionally official
cloud storage - for binaries matching a given build ID. The search is
strictly local by default, and assumes that build directories are of the
form $FUCHSIA_DIR/out/foo.
--verbose|-v Report the locations in which there was no match.
--remote|-r Extend the search to cloud storage. This takes a dependency
on `gsutil`, which is expected to be on one's PATH. Further,
for access to non-public storage, it is assumed that the
user has already ran `gcloud auth login`.