Consider supporting "--key" argument at UDS bundle level to verify packages inside bundle

### Is your feature request related to a problem? Please describe

Unable to verify packages within a UDS bundle during UDS deploy command

### Describe the solution you'd like

- **Given** a UDS bundle containing signed Zarf packages
- **When** I attempt to deploy the UDS bundle
- **Then** I want feedback on whether the Zarf packages are signed with a given public key

### Describe alternatives you've considered

Alternatives include running `zarf package verify` for each package before deploying a bundle, but this adds a bunch of unnecessary complexity