Sorted the documents list in descending order

Log google drive documents in the mongodb, add source of the document and made chunks to overlap text.

Commiting code

Updated embedding to produciton, changed the depenedency for magic library

Update deployment constraints for python-magic-bin

Updarte chatbot with deployment configurations on the Render

Implementation for Google drive is done. Now it is working fine, except need a new function that can delete the chunks if a document is removed from google drive.

Enhanced the support for the excel file and added endpoint to have optimized vector store and Rag for the Excel.

Setup completed

Refactoring code

Added support for multiple LLMs