Integrate HyDE (Hypothetical Document Embeddings)

**Is your feature request related to a problem? Please describe.**
Improve information retrieval by integrating HyDE. Thias process works by generating fictious documents in the hope that the target document looks similar. Thereby easy matching similar information in the datastore.

**Describe the solution you'd like**
HyDE integrated into the retreival stage in a performant manner.
