Make it possible to run HermiT on EMMO

[jesper-friis]

Description

Make it possible to run HermiT on EMMO, by:

• Add support for additional keyword arguments that sync_reasoner() may pass to the save() method.
• Remove custom datatypes before running HermiT. Readd the removed data properties after HermiT completes.
• Add --java-executable and --java-memory arguments to ontoconvert to control how to run java.

Type of change

• [x] Bug fix.
• [ ] New feature.
• [ ] Documentation update.
• [ ] Test update.

Checklist

This checklist can be used as a help for the reviewer.

• [ ] Is the code easy to read and understand?
• [ ] Are comments for humans to read, not computers to disregard?
• [ ] Does a new feature has an accompanying new test (in the CI or unit testing schemes)?
• [ ] Has the documentation been updated as necessary?
• [ ] Does this close the issue?
• [ ] Is the change limited to the issue?
• [ ] Are errors handled for all outcomes?
• [ ] Does the new feature provide new restrictions on dependencies, and if so is this documented?

Comments

[francescalb]

We should have a test on this. It is important that we wuickly pick up if running sync_reasoner on EMMO does not work.

[codecov[bot]]

Codecov Report

Attention: Patch coverage is 66.66667% with 9 lines in your changes are missing coverage. Please review.

Project coverage is 72.14%. Comparing base (a8f5c24) to head (3b7c21b).

Files	Patch %	Lines
ontopy/ontology.py	66.66%	9 Missing :warning:

Additional details and impacted files

```diff @@ Coverage Diff @@ ## master #740 +/- ## ========================================== - Coverage 72.21% 72.14% -0.07% ========================================== Files 17 17 Lines 3462 3486 +24 ========================================== + Hits 2500 2515 +15 - Misses 962 971 +9 ```

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