* feat: start postgres module with integration tests
* feat: postgres insert documents with embeddings
* feat: postgres vector index
* chore: add makefile for postgres module
* chore: update cargo lock
* feat: added example with more than one embedding per document
* fix: return only nearest match when a document has more than one embedding
* chore: add readme and license
* chore: updates based on pr comments
* fix: conflicts
Carlos Verdes