Add CLI option to skip git hooks
This MR adds a new flag --no-verify which, if specified, passes the same flag on to git.
This allows to skip pre-commit hooks under git-gamble.
Possible points for bike shedding:
- Symmetry/naming: Should there be a
--verifyflag too? - Default behavior: Should
--no-verifybe the default instead?
Fixes #2 (closed)