🦟 Bug fix

Fixes #450.

Summary

When a gz-* package is found with find_package, its cmake config file encodes the list of required dependencies in its pkg-config file. If the package is found with required components, those components should be encoded in the pkg-config file as well. This uses the existing for loop over components in the gz-config.cmake.in file and stores the names of required components, then appends them to the string passed to gz_pkg_config_entry.

I spent some time trying to add a test for this in branch scpeters/test_component_export ( gz-cmake4...scpeters/test_component_export ) but have not yet been successful. I've tested this fix manually and think it works.

Checklist

• 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)
• codecheck passed (See contributing)
• All tests passed (See test coverage)
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