Dabatase handler refacto

[BenoitSafari]

We need to rework and simplify api/database interactions. API should be the only source of truth concerning the database, as such we need to setup a migration strategy within the DB. Some queries uses the reduceSelect/reduceWhere functions, it should be based on the controller schema.

Tasks

• [x] Set a data migration strategy https://github.com/Cinevoraces/cinevoraces/pull/180
• [x] Create a Repository class that interface database interactions https://github.com/Cinevoraces/cinevoraces/pull/179
• [x] Create current DB views and functions in the API services Canceled
• [x] Create a QueryString class that handles the front-client queries instead of DB related functions https://github.com/Cinevoraces/cinevoraces/pull/179