Use updated message generate pipeline

[mjcarroll]

🎉 New feature

Summary

Update fuel tools to use message generation in gazebosim/gz-msgs#339

Test it

No external changes should be visible.

Checklist

• Signed all commits for DCO
• 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)
• codecheck passed (See contributing)
• 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]

Codecov Report

Merging #354 (7390bbe) into main (fd7340f) will decrease coverage by 0.03%.
The diff coverage is n/a.

❗ Current head 7390bbe differs from pull request most recent head ad8abd8. Consider uploading reports for the commit ad8abd8 to get more accurate results

@@            Coverage Diff             @@
##             main     #354      +/-   ##
==========================================
- Coverage   75.32%   75.30%   -0.03%     
==========================================
  Files          20       20              
  Lines        2910     2911       +1     
==========================================
  Hits         2192     2192              
- Misses        718      719       +1     

see 3 files with indirect coverage changes