[COG-1322] Minimal SpaCy-Based Entity Extraction

[lxobr]

Implement a simple entity extraction method using SpaCy, optionally leveraging transformer-based models like GlinER. Ensure compatibility with the entity extraction interface from the search skeleton.

• Use SpaCy to extract entities from string input.

• Explore both standard SpaCy models and transformer-based options (e.g., GlinER) and select one.

• Ensure compatibility with the interchangeable entity extraction module.

• Keep it minimal, focusing on extracting entities without additional processing.

• Test with a few sample inputs to validate extraction quality.

Note: Follow up to COG-1318

_{From SyncLinear.com | COG-1322}