feat: option to hide singles, EPs and albums by content restriction type

[p0ryae]

implements #248

Notes:

1. Default is show all
2. Picking any other option is treated as a preference. If a user selects Explicit Only we won't hide clean versions if there is no explicit version that exists for that album / single etc..
3. Same thing for Hide Explicit. We return explicit albums if there are no clean versions.

[p0ryae]

No Content Restriction (Show All):

Explicit Only Restriction:

Hide Explicit Restriction: