[BACKEND] Keep history of the sessions operational data

[hadamrd]

We can go back them query them to generate for the user nice stats about performances of its past sessions.
A model to store these run states history should be added to the db model and linked with foreign key to the session table.
A signal must be added that kicks a create_session method of the SessionService whenever the SessionRun objects are created.
The benefits is to decouple the logic of creation deserialization and validation completely from the business logic.