[Feature][Retrieval] Retrieval Module

[Amir-R25]

Feature Request

Parent ticket to track all retrieval module related tasks.

Additional Context

• Feature branch: https://github.com/RailtownAI/railtracks/tree/feature-branch-rag
• Add related issues to this ticket as they are created

Upon completion, this ticket should also address and close the following from previous rag module since there's a lot of duplicates:

• [Tech Debt][RAG] Rag submodule should be decoupled #948
• [Docs][RAG] Vector stores documentation is a bit ambiguous #878
• [Tech Debt][RAG] Allow optional "Include" statements for chroma vector store search #870
• [Feature][RAG] Create Milvus Vector Store #866
• [Tech Debt][RAG] Create integration tests for chunking and vector stores #862
• [Feature][RAG] Create logging for chunking and vector stores #860
• [Feature][RAG] Provide options for different types of smart chunking #735
• [Feature][RAG] Create validation file for vector stores and chunking like node creation has #850
• [Tech Debt][RAG] Package restructure of RAG module #837
• [Tech Debt][RAG] Too Much Duplicate Functionality in RAG module #831
• [Docs][RAG] Add a List of Available Vector Store Integrations #829
• [Docs][RAG] Write Documentation for How to Write your Own Vector Store #828
• [Feature][Docs] Add async functionality to vector store implementations #827
• [Feature][RAG] Add specific Configurations to Each Concrete Vector Store #820
• [Feature][RAG] Support for Pincone #815
• [Feature][RAG] Embedding Model Wrapper #804