Add parse list of intervals to ``parse_anomaly_response``

[sarahmish]

Parse anomaly response filters the output of the LLM to show only:

• a list of values that the LLM claimed as anomalous "[23, 34, 657]".
• we should also support the ability for it to parse a list of intervals "[[23, 43], [640, 657]]".

In the current implementation of parse_anomaly_response, the method uses re.search which returns only the first match.

sigllm/sigllm/primitives/transformation.py

Line 213 in b850ea9

match = re.search(pattern, text)

However, we want to return all the detected ranges, not only the first one. Proposing to change this to re.finditer which will return all matches in an iterable.

Lastly, this is a function that is only for prompting techniques. We can mode it there instead of transformations module.