software.json file should show metadata about the model used

The results can be fairly different if using the wapiti models as compared to the delft models.  Yet the metadata of the results file doesn't show that.

```json
{
    "application": "software-mentions",
    "version": "0.8.3-SNAPSHOT",
    "date": "2025-09-22T14:45+0000",
}
```

It would be great if the metadata in the results showed the full configuration of the system.