[SYSTEMDS-3178] Builtin for tuples deduplication

[esracosgun]

This pull request implements a deduplication pipeline for string tuples using distributed representations and LSH, as required for the assignment. The following steps are covered:

• Distributed Representation: Each tuple is mapped to a dense vector using average GloVe embeddings.
• LSH-based Blocking: Similar tuples are grouped into candidate buckets using random hyperplanes (LSH).
• Similarity Computation: Candidate pairs are compared using a similarity measure (cosine or euclidean)
• Duplicate Filtering: Tuples exceeding a similarity threshold are marked as duplicates; only the first occurrence is retained as unique.

Outputs:

• Y_unique: Deduplicated tuples (first occurrence only).
• Y_duplicates: All detected duplicates removed from the input.