Add OpenMP dependency in the config file

[RShaw026]

Description and Context

This MR adds the OpenMP dependency in the mirco_libConfig.cmake file. Therefore, BACI does not need to do find_package(OpenMP).

Related Issues and Pull Requests

• Closes
• Blocks
• Is blocked by
• Follows PR #79
• Precedes
• Related to
• Part of
• Composed of

How Has This Been Tested?

Compiled together with BACI in my local machine.

Checklist

• [ ] My commit messages mention the appropriate GitHub issue numbers and are longer than one line where appropriate.
• [ ] I have added/updated documentation where necessary.

Additional Information

Interested Parties / Possible Reviewers

@mayrmt