moves memory to own module, factors out common stuff
This PR: - Increases `qdrant-client` version to 1.0.4 - Introduces custom content and metadata keys (as requested in #1087) - Moves all the `QdrantClient` parameters into the method parameters to simplify code completion
accomplisehd -> accomplished
Co-authored-by: Bruno Bornsztein <bruno.bornsztein@gmail.com>