project maintenance is outdated and not tested

[Leimeroth]

Currently the project.maintenance.local.defrgament_storage() functionality is broken.
Fails with following:

File ~/git_projects/pyiron_base/pyiron_base/project/maintenance.py:102, in LocalMaintenance.defragment_storage(self, recursive, progress, **kwargs)
     98 for job in self._project.iter_jobs(
     99     recursive=recursive, progress=progress, convert_to_object=False, **kwargs
    100 ):
    101     hdf = job.project_hdf5
--> 102     hdf.rewrite_hdf(job.name)

AttributeError: 'ProjectHDFio' object has no attribute 'rewrite_hdf'

Also there is rewrite_hdf and rewrite_hdf5 and I am not sure how they differ.