SDFormat to MJCF: Add conversion for IMU Sensor

[azeey]

🎉 New feature

Toward #16

Summary

The SDFormat IMU sensor is mapped to sensor/accelerometer and sensor/gyro in MJCF.

Test it

tests/test_add_sensor.py tests/test_add_link.py

Checklist

• [x] Signed all commits for DCO
• [x] Added tests
• [ ] Added example and/or tutorial
• [ ] Updated documentation (as needed)
• [ ] Updated migration guide (as needed)
• [ ] Consider updating Python bindings (if the library has them)
• [x] codecheck passed (See contributing)
• [x] All tests passed (See test coverage)
• [ ] While waiting for a review on your PR, please help review another open pull request to support the maintainers

Note to maintainers: Remember to use Squash-Merge and edit the commit message to match the pull request summary while retaining Signed-off-by messages.

[codecov[bot]]

Codecov Report

Merging #46 (58d1bea) into main (dc38103) will increase coverage by 0.18%. The diff coverage is 100.00%.

@@            Coverage Diff             @@
##             main      #46      +/-   ##
==========================================
+ Coverage   97.08%   97.27%   +0.18%     
==========================================
  Files          14       15       +1     
  Lines         481      513      +32     
==========================================
+ Hits          467      499      +32     
  Misses         14       14              

Impacted Files	Coverage Δ
...ormat_to_mjcf/sdformat_to_mjcf/converters/model.py	100.00% <ø> (ø)
...format_to_mjcf/sdformat_to_mjcf/converters/link.py	100.00% <100.00%> (ø)
...rmat_to_mjcf/sdformat_to_mjcf/converters/sensor.py	100.00% <100.00%> (ø)

---

Continue to review full report at Codecov.

Legend - Click here to learn more Δ = absolute <relative> (impact), ø = not affected, ? = missing data Powered by Codecov. Last update dc38103...58d1bea. Read the comment docs.