Improve NER Extraction by Using Tool Calls Instead of solely relying on LLM Prompts

[djarecka]

Improve NER Extraction by Using Tool Calls Instead of solely relying on LLM Prompts
Improve the current NER extraction by leveraging domain-specific models and specialized tools instead of relying solely on the LLM. These tools should support running multiple models (see figure below) in parallel on each text chunk (or input) and produce a final output by merging and globally reconciling the extracted entities.

[tekrajchhetri]

Design document: https://github.com/sensein/structsense/blob/improvement/docs/design_docs/improve_ner_tool_calls.md

[tekrajchhetri]

Concept mapping: https://github.com/sensein/structsense/blob/improvement/docs/design_docs/replace_ontology_database.md