feature: enablement of grid view mode in NativeList

[arkaprota]

Enable grid view for CoreList component, so that all children (CoreListItem) appear on grid.

The new variant (GRID) should also support the following:

1. • props for number of items in every row for different screen sizes (default, sm, md,...)
2. • props to enable toolbar
3. • toolbar to navigate between LIST and GRID, preferably multiple GRID sizes (like 3 items per row OR 4 items per row OR ...)
4. • the toolbar should also have a search (this will only search in the already rendered items)
5. • Support lazy loading for the CoreList
6. • CoreListSubHeader is getting wrapped
7. • if a array is sent inside the list it will create a list

Image
Present state: CoreList variant="list" (Default)

Expected: CoreList variant="grid"