Add data discovery mechanism to the database to avoid unnecessary queries #28
Description
Is your feature request related to a problem? Please describe.
In order to save traffic and computing resources, we can implement a handler that will check the availability of data in the database and report what information is already there, and what we need to get from Internet services (i.e. TMDB).
Describe the solution you'd like
Need to create class which can monitor data base and provide list of available data to reuse. Also if we want to force clean and fill DB again, then there should be option to do such action.
Describe alternatives you've considered
None.
Additional context
Not forget to test solution with different cases.