Add generate_diagnostic_report method to ScheduableGettable (QAE-95)

Explanation of changes

Added a method to ScheduleGettable to save its internal state to a zip-file. The goal is that the compilation and execution of a schedule can be replicated from this zip-file alone

To Do:

• It might be a good idea to also save the compiled schedule in case compilation cannot be replicated. (this will happen if the user is using their own definitions for operatiosn and pulses)
• For schedules compiled with the qblox backend, there is some more information that we could store, it would be nice to add this as well, probably as an extra function in the backend.

Motivation of changes

This method was added at the ScheduleGettable layer since it is currently the place that combines knowledge on the hardware/device config, schedule and connected hardware. Any lower level currently does not contain all information.

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Merge checklist

See also merge request guidelines

• Merge request has been reviewed and approved by a project maintainer.
• Merge request contains a clear description of the proposed changes and the issue it addresses.
• Merge request made onto appropriate branch (main for most MRs).
• New code is fully tested.
• New code is documented and docstrings use numpydoc format.
• CHANGELOG.rst and AUTHORS.rst have been updated (when applicable).
• CI pipelines pass
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  • test suite passes (gitlab-ci),
  • no degradation in code-coverage (codacy),
  • no (serious) new pylint code quality issues introduced (codacy),
  • documentation builds successfully (CI and readthedocs),
  • windows tests pass (manually triggered by maintainers before merging).

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