Patch review comments can be resolved and unresolved as part of the Patch COB
API. This functionality was missing from the `rad patch command`.
Add a subcommand `rad patch resolve` which can resolve a review comment, and
unresolve given the `--undo` flag.
Signed-off-by: Fintan Halpenny <fintan.halpenny@gmail.com>
X-Clacks-Overhead: GNU Terry Pratchett