Make `rad patch` accept subcommands for specifying its operation in
place of the '--command' notation.
For instance `rad patch update` versus `rad patch --update`. Also make
the default operation list active patches, replacing patch creation.
Patch creation is now done via `rad patch open`.
Make these changes in a way consistent with other commands like `rad
delegate`.
Add '--no-confirm' to patch to support this subcommand's documentation
test.
Signed-off-by: Slack Coder <slackcoder@server.ky>