Ability to negate a wildcard when selecting branches to protect
### Problem to solve
We currently support wildcards in protected branches. Customer would like to have the option to negate a protected branch regex. That is, be able to say something like 'protect all branches except `feature/*`'.
It may be even more powerful if we support full regex support. That is out of scope for this issue
### Proposal
Add ability to negate a wildcard when selecting a set of branches to protexct. i.e. **Protect all branches except `feature/*` .**
issue