[GSK-2030] Various mlflow related updates

[rabah-khalek]

• exposing description in giskard.Model in order to be able to do this:

  evaluator_config={
    "model_config":
     {"name": "Climate Change Question Answering",
      "description": "This model answers any question about climate change based on IPCC reports",
      "feature_names": ["query"],}
    }

  instead of

  evaluator_config={
    "model_config":
     {"name": "Climate Change Question Answering",
      "kwargs": {"description": "This model answers any question about climate change based on IPCC reports"},
      "feature_names": ["query"],}
    }

• reformatting the metrics names logged into mlflow

[linear]

GSK-2030 Adjust logging of test suite

[rabah-khalek]

How it looks like

[rabah-khalek]

restore the old metric display for the classical scan, and have another format for LLMs

[rabah-khalek]

I restored the old nomenclature for the tests generated by the traditional scan.
the check on metric_name == "Metric" is not sustainable I know, but this is the easiest way out I could find right know.

Let's solve this properly in GSK-2041

[rabah-khalek]

the LLM case

[sonarqubecloud]

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