Upload docs to an s3 bucket based only on the major version

[nkoenig]

Signed-off-by: Nate Koenig nate@openrobotics.org

🎉 New feature

Closes #

Summary

This changes the upload_doc.sh script so that API documentation is uploaded to a directory based only on the major version. This will make it easier to find, maintain, and link to the API documentation.

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)
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[chapulina]

• Nice! This addresses Organize docs by major version, not minor docs#52