This moves licenses of vendored code from one monolith file into a tree
of individual files for easier reviews. This fixes both the bash and
bazel paths.
- add ./hack/tools/go.mod, this makes ./hack/tools a distinct module
- hack/tools/tools.go undescore imports bazel related tools, over time we
can add others.
- hack/*.sh scripts will cd to hack/tools and go install tools from there
Signed-off-by: Davanum Srinivas <davanum@gmail.com>
