Removed USD component from SDFormat and move to gz-usd

[ahcorde]

Signed-off-by: ahcorde ahcorde@gmail.com

🎉 New feature

Removed USD component from SDFormat and move to gz-usd

There are some reason to move this component:

• It's using the FUEL directory structure to get some models SDFormat shouldn't handle Fuel models as a special case #1051
• External contributors asking for permission in SDFormat (easy to given then permissions in another repository)
• Other converters are in a different repo https://github.com/gazebosim/gz-mujoco
• This module is not yet released
• Less time on CI

New location https://github.com/gazebosim/gz-usd

Summary

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 #1094 (68f6627) into sdf12 (f776995) will increase coverage by 4.80%.
The diff coverage is n/a.

@@            Coverage Diff             @@
##            sdf12    #1094      +/-   ##
==========================================
+ Coverage   86.48%   91.28%   +4.80%     
==========================================
  Files         109       80      -29     
  Lines       16043    13086    -2957     
==========================================
- Hits        13874    11946    -1928     
+ Misses       2169     1140    -1029     

---

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 f776995...68f6627. Read the comment docs.

[chapulina]

See this for the warning on Jenkins:

• Remove SKIP_usd gazebo-tooling/release-tools#773

We should also update examples/usdConverter to point to the new location. I think it's worth it keeping the example here so the old links to them still work.

There's also the test/usd directory, and these:

• sdformat/.github/workflows/ci.yml

  Lines 20 to 23 in 5a7544a

  	run: |
  	echo "PATH=$PATH:/tmp/USD/bin" >> $GITHUB_ENV
  	echo "LD_LIBRARY_PATH=$LD_LIBRARY_PATH:/tmp/USD/lib" >> $GITHUB_ENV
  	echo "CMAKE_PREFIX_PATH=$CMAKE_PREFIX_PATH:/tmp/USD" >> $GITHUB_ENV

• sdformat/CMakeLists.txt

  Line 113 in 5a7544a

  ign_find_package(ignition-utils1 COMPONENTS cli REQUIRED_BY usd)

Finally, let's add notes to the migration guide explaining what a user needs to change to use the new location.

[chapulina]

the test/usd directory

That's still there. Remove them here and make sure the tests are also present in the new repo