AI-GCS: Implement efficient hamming distance fingerprint matching, e.g., the core search

[pombredanne]

This is to implement efficient search and matching of fingerprints in hamming distance and should implement the selected design with a basic search ranking procedure as efficient search and matching engine code.

[JonoYang]

We have implemented the halohash algorithm for approximate file matching at https://github.com/aboutcode-org/matchcode-toolkit/blob/main/src/matchcode_toolkit/halohash.py

This is the core hashing algorithm that we use to create the file fingerprint halo1, the snippet hashes, and the directory matching hashes.

[JonoYang]

This is available at https://pypi.org/project/matchcode-toolkit/