Draft: Resolve "new HDF5 writer"
Description
Adding HDF5 writing support
Test Plan
step-by-step instructions for how someone could verify that your code works (perhaps with a minimal example run card)
Example Result
perhaps a plot exemplifying the new feature; ideally the outcome of the above test plan, or the result of a more involved run
Additional Checklist Items
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I have updated documentation as needed -
I considered if this should be cherry-picked/ported somewhere else (rel-2-x or master), and if yes, opened a corresponding issue or MR
Closes #515 (closed)