report object format

[leondz]

Report JSONL files should have an eval summary as the last object
What goes in?

• version of garak used
• run id, start time, end time if given
• configuration
• version of calibration used
• category bounds from garak.analyze.__init__ used in analysis
• bundle of probe/detector eval results
  • probe names as top level key
    • detector names as second level key
    • each result has #prompts, #passes, #skips
    • add pass rate, Z-score predicated on calibration version listed
• optional: list of message strings

[leondz]

NB analyze.aggregate_reports should also aggregate this information

[leondz]

Added in #1245