Feature Request: Configurable Embedding Model

[kmitul]

🚀 The feature

Allow users to specify the embedding model of their choice through a configuration parameter.

Motivation, pitch

The current implementation of the repository supports multiple embedders, but the embedding model to be used is still hardcoded. Since the embedding model is hardcoded, it kind of limits what we can do with the repo.

By allowing users to pick their own embedding model, we can make the repo way more flexible and useful for different needs. This change will let users experiment with different models and find the best fit for their specific tasks. Plus, it makes the repo more adaptable and fun to use. Let's make this happen and give everyone the freedom to choose the best embedding model for their projects!