Draft: ENH: Adapt for MacOS

Summary

This MR makes the Octave CaosDB library fit for MacOS.

Focus

Does it build? Do the tests run fine? is the user experience similar to Linux?

Test Environment

• Follow the setup instructions.
• Install with make install.
• Create and save a client configuration json.
• Run the tests with make test.
• Try out the tutorial.

Check List for the Author

• All automated tests pass
• Reference related Issues
• Up-to-date CHANGELOG.md
• Annotations in code (Gitlab comments)
  • Intent of new code
  • Problems with old code
  • Why this implementation?

Check List for the Reviewer

• I understand the intent of this MR
• All automated tests pass
• Up-to-date CHANGELOG.md
• The test environment setup works and the intended behavior is reproducible in the test environment
• In-code documentation and comments are up-to-date.
• Check: Are there spezifications? Are they satisfied?

For further good practices have a look at our review guidelines.