Fully support nested types in lists::drop_list_duplicates

[ttnghia]

This reimplements lists::drop_list_duplicates, adding full support for nested types. The new implementation is significantly shorter than the old one by leveraging the existing label_segments and stable_distinct utilities APIs. Performance should also be improved significantly by completely avoiding sorting.

Closes #11093, closes #11053, and closes #9257.

Depends on:

• Implement lists::distinct and cudf::detail::stable_distinct #11149

Follow up work:

• [FEA] Deprecate lists::drop_list_duplicates #11114

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Progress:

• Implementation.
• Fix unit tests