Log the tag when it is generated via the arg (like patch)

```
❯ swift run rocket patch
✔ hide_dev_dependencies (packagePath=Package.swift)
✔ git_add (paths=["."])
✔ commit
✔ tag
✔ unhide_dev_dependencies (packagePath=Package.swift)
✔ git_add (paths=["."])
✔ commit (message=Unhide dependencies)
✔ push (remote=origin branch=HEAD)

Done in 9.4480s
```

Would ideally have said:

```
✔ tag 1.2.1
```