Embedding changes

Merge branch 'main' into chroma_db

file upload feature

BACKEND : Setup Database to store and retrieve information

update model queries for better responses

modify response length

update llm client for better responses

document upload tests

document upload support

update gemini model

gemini changes

env changes

add gemini routes

add sequential and reply routes

add generic ollama client

resolving merge conflicts

add in-chat orchestrator

add routes for orchestrator

update cors

Changes to include single model represented as multiple personas