[Feature Request] Implement a separate cube_series table

[Saterz]

Is your feature request related to a problem? Please describe.
As of now, cubes are only grouped as series if they have exactly the same text string in the series column of the cube_models table. When they differ by even one character they are no longer grouped, this system is not reliable.

Describe the solution you'd like
Making a dedicated cube_series table that will link to the cube_models one thanks to a foreign key. Replacing the old series column

Describe alternatives you've considered
None

Additional context
None