cargo-hack compatibility

[Cargo-hack](https://github.com/taiki-e/cargo-hack) runs a cargo command against various combinations of features (at its simplest, `--each-feature`). When the output of this is displayed in bacon, the context of which package is being run is lost. E.g.:

The output header above each run is like:
```
info: running `cargo test --all-features` on ratatui (1/32)
```

I'm not sure what's best to do here, either grouping or dedupe both seem like rational ideas.