Integration with QCArchive infrastructure

[awvwgk]

Would be useful to also provide an integration with the QCArchive infrastructure. For this purpose a function is needed which can take a QCSchema compliant input, e.g. provided by QCElemental, use tblite.interface to perform the requested computation, and return a QCSchema compliant output.

Example implementations:

• xtb-python: https://github.com/grimme-lab/xtb-python/blob/main/xtb/qcschema/harness.py
• dftd4: https://github.com/dftd4/dftd4/blob/main/python/dftd4/qcschema.py
• dftd3: https://github.com/dftd3/simple-dftd3/blob/main/python/dftd3/qcschema.py