feat: add history persistence component

[mhordynski]

Feature description

The goal of this task is to introduce a new component or service that is responsible for saving and retrieving user history in a database.

It should provide abstract interface to storing / retrieving history from backend. First implementation should use some Postgres (it can be done via sqlalchemy to support multiple backends at once).

Motivation

Handling history is an important component in nearly every Generative AI application.

Additional context

No response