Add sentiment classification task

[Vasilije1990]

NOTE: This issue is part of Contribute-to-Win. Please comment first to get assigned. Read the details here

Problem

When user is conversing and using cognee over a period of time, we might not have an understanding of how user reacts to cognee search. Doing sentiment analysis can tell us how are searches understood by the user and give us a basis to understand how to provide better answers

Solution

Use save_interaction=True and automatically analyze interactions saved in order to extract DataPoints that would contain sentiment analysis attached to the conversation

The task should be a part of memify pipeline