# Description

This MR adds utilities to enable the hydra configuration system.
Using the `train.py` scripts, the user can now change any parameter in
the environment or agent configs from command line inputs, for example:
``` 
python source/standalone/workflows/rsl_rl/train.py --task Isaac-Cartpole-v0 --headless env.actions.joint_effort.scale=10.0
```

## Type of change

- New feature (non-breaking change which adds functionality)

## Checklist

- [ ] I have run the [`pre-commit` checks](https://pre-commit.com/) with
`./isaaclab.sh --format`
- [ ] I have made corresponding changes to the documentation
- [ ] My changes generate no new warnings
- [ ] I have added tests that prove my fix is effective or that my
feature works
- [ ] I have updated the changelog and the corresponding version in the
extension's `config/extension.toml` file
- [ ] I have added my name to the `CONTRIBUTORS.md` or my name already
exists there

---------
Signed-off-by: David Hoeller <dhoeller@nvidia.com>
Co-authored-by: Mayank Mittal <12863862+Mayankm96@users.noreply.github.com>
Co-authored-by: Kelly Guo <kellyg@nvidia.com>