Updates CODEOWNERS for Isaac Lab Mimic (#3714)

# Description
Update CODEOWNERS for Isaac Lab Mimic

## Type of change

- Documentation update

## Checklist

- [ ] I have read and understood the [contribution
guidelines](https://isaac-sim.github.io/IsaacLab/main/source/refs/contributing.html)
- [ ] 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

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Signed-off-by: Yan Chang <yachang@nvidia.com>

.github/CODEOWNERS

@@ -65,6 +65,11 @@
 
 # Mimic
 /source/isaaclab_mimic/isaaclab_mimic @peterd-NV
+/source/isaaclab_mimic/isaaclab_mimic @njawale42
+/source/isaaclab_mimic/isaaclab_mimic @michaellin6
+/source/isaaclab_mimic/isaaclab_mimic @jaybdub
+/source/isaaclab_mimic/isaaclab_mimic @huihuaNvidia2023
+/source/isaaclab_mimic/isaaclab_mimic @xyao-nv
 
 # RL
 /source/isaaclab_rl/isaaclab_rl/rsl_rl @Mayankm96 @ClemensSchwarke