Add altor-vec: 54KB WASM HNSW vector search running in the browser

[anshulbasia27]

altor-vec is a client-side HNSW vector search engine compiled to 54KB of WASM. It runs entirely in the browser — no server, no API keys, no per-query cost.

• Sub-millisecond query latency at 10K vectors (0.6ms p95)
• 95.4% recall@10 measured on 10K documents (384d)
• MIT licensed, TypeScript types included
• Works in React, Vue, Next.js, or vanilla JS
• npm: npm install altor-vec
• GitHub: https://github.com/Altor-lab/altor-vec
• Docs: https://altorlab.dev

Added it after Voy (both are Rust-compiled WASM ANN libraries for JavaScript).

[theblackcat102]

thanks! merged