Verify expected Libraries are present in LibraryManager

[Chris0296]

Description

The below issue is resolved as part of operation overhaul. This PR adds an assertion to Library Generation Tests to ensure that the expected libraries are compiled and present within the Library Manager.

• Github Issue: https://github.com/cqframework/cqf-tooling/issues/443
• [x] I've read the contribution guidelines
• [x] Code compiles without errors
• [x] Tests are created / updated
• [x] Documentation is created / updated

By creating this PR you acknowledge that your contribution will be licensed under Apache 2.0