More informative failure messages for InsertionElectrodeMaker

[esoteric-ephemera]

To do with lower priority:

• Increase the transparency for reasons why the ElectrodeInsertionMaker fails. Right now, the flow can stop in multiple places and the reasons aren't clear to the end user
• Failure type 1: If no topotactic insertions were found (structural framework after insertion changed) then the get_min_energy_summary returns None and get_stable_inserted_results fails. Should throw an error in get_stable_inserted_results
• Failure type 2: InsertionElectrodeDoc.from_entries returns None if it cannot process the flow output. That causes get_insertion_electrode_doc to fail with a schema error. Should return a minimal InsertionElectrodeDoc with failure reasons

There are probably others - would appreciate if anyone using these flows could comment!