feat: support for Halfvec and Sparsevec vector types #226
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This PR adds full support for pgvector’s Halfvec and Sparsevec vector types in both table and index creation.
This adresses the 2 000-dimension limit of the standard vector type, not enough for models like text-embedding-3-large.
halfvecstores embeddings as INT8 quantized values and supports indexing up to 16 000 dimensions.sparsevecstores sparse embeddings and also supports up to 16 000 dimensions.