Add support for providing `wandb` run name.

Nobody has claimed this yet.

At the moment, the logger functionality for `wandb` only sets the project name (based on the provided model). It would be useful to also allow us to set the run's name, as well as the group:
```
if logger_name == "wandb":
run_name=kwargs.pop("run_name", os.environ.get("WANDB_RUN_NAME"))
group=kwargs.pop("group", os.environ.get("WANDB_GROUP_NAME"))
return WandbLogger(name=run_name, group=group, project=name, resume=resume, **kwargs)
```

Start at the logger functionality that handles logger_name="wandb" and inspect how the project currently derives the project name from the model. Trace the WandbLogger construction and its kwargs handling. Done means callers can provide run_name and group, with the documented environment-variable fallbacks, without changing existing project or resume behavior.

Written by the indexing model from the issue text.