Correct assumptions made about how patching work in `rad patch`. Make
the default Patch target a `git ref` in place of a target 'peer'.
Use the canonical head as the git reference. This is head of the
project's master branch which project delegates have concensus on.
Simplify codebase by splitting patch::create::run() into patch::create::run() and
patch::update::run().
Patch has the subcommands `create` and `update` but both use the same
method to do the heavy lifting. Spitting the code allows us to detangle
the code path making it easier to follow.
Also, reduce cognitive load by minimizing the amount of variables used
and isolating them to utility functions. For instance, `head_branch` can be passed to
these methods instead of `head_oid` and `head_branch`.
Signed-off-by: Slack Coder <slackcoder@server.ky>
Alexis Sellier
Slack Coder