[ngalstyan4]

Our index access method will be called lantern_hnsw if pgvector or any other provider has already taken the hnsw access method name.

btw, we did not create our own vector type and just use size-enforced real[] arrays to represent embeddings. However, you can use our index with pgvector's vector type. So, if you already have a table with pgvector's vector column type, you can start using Lantern by just creating an index on the same column.