[Development] Renaming QGenericItemModel

[Sune Vuorela]

On 2025-05-09, Volker Hilsheimer via Development <development at qt-project.org> wrote:
> It’s not abstract, but it’s also not specific.

It looks like it is built on a range or a collection/container of 
tuples or something like that

QRangeBasedItemModel ?
QTupleCollectionItemModel ?
QContainerItemModel ?

I'm a bit with Guiseppe that QGenericItemModel is not a good name.

/Sune