Implement a RAG use case

[hemajv]

We should implement a RAG use case taking an imaginary company as an example and include it as a tool for our agent setup. The following RAG components should be setup on an OpenShift cluster:

• Vector DB i.e milvus
• Different documents generated for the imaginary company such as product docs, HR policy docs, sales docs etc
• Collections/indexes defined for the different documents in the vector DB
• Embedding model
• Retriever service
• LLM i.e mistral-7b
• Separate RAG service endpoints for the different collections in the vector DB

[hemajv]

related PR: #6