# Description

This PR: 

- Adds ContactSensorCfg.track_contact_points to toggle tracking of
contact point locations between sensor bodies and filtered bodies.
- Adds ContactSensorCfg.max_contact_data_per_prim to configure the
maximum amount of contacts per sensor body.
- Adds ContactSensorData.contact_pos_w data field for tracking contact
point locations.

Fixes # (issue)

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## Type of change

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applicable. -->

- 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: James Tigue <166445701+jtigue-bdai@users.noreply.github.com>
Signed-off-by: Kelly Guo <kellyg@nvidia.com>
Signed-off-by: ooctipus <zhengyuz@nvidia.com>
Co-authored-by: Ashwin Khadke <133695616+akhadke-bdai@users.noreply.github.com>
Co-authored-by: Kelly Guo <kellyg@nvidia.com>
Co-authored-by: ooctipus <zhengyuz@nvidia.com>