Get bullet version from cmake instead of API

[scpeters]

🦟 Bug fix

Split out from #574 with acknowledgement to @iche033

Summary

Currently the bullet API is called from a common test to get the bullet version in order to disable portions of a test that require new features of bullet. This moves the version checking to cmake with VERSION_* comparison operators and replaces the bullet API call with a macro defined based on that cmake version comparison.

Checklist

• [X] Signed all commits for DCO
• [ ] Added tests
• [ ] 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

All modified and coverable lines are covered by tests :white_check_mark:

Comparison is base (216f174) 78.59% compared to head (f05510d) 78.59%.

Additional details and impacted files

```diff @@ Coverage Diff @@ ## gz-physics6 #591 +/- ## ============================================ Coverage 78.59% 78.59% ============================================ Files 140 140 Lines 7654 7654 ============================================ Hits 6016 6016 Misses 1638 1638 ```

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