feat: `--dry-run` for `mason publish`

[GroovinChip]

Description

It would be nice if the publish command had a --dry-run option so that any issues can be addressed safely prior to publishing. For example: I just went to publish my first brick, and the command errored out because I didn't add the repositoryfield.

Requirements

• [ ] Add a --dry-run option to the publish command, similar to flutter pub publish --dry-run

Additional Context

N/A