QML ListView locale-aware section grouping

This is a cross-post of KDE bug: https://bugs.kde.org/show_bug.cgi?id=433297#c1

The ListView ViewSection.FirstCharacter uses the first character in the entry name to do the alphabetic indexing. According to the doc, it could be used for 'A', 'B', 'C' sections, etc. for an address book, but for the non-English locale, it could be very much useless if it group by the first character. @Mikel Johnson from KDE suggested providing section.criteria: ViewSection.FirstCharacterRomanized or something like that.

Please also refer to the KDE bug link to see a more complete example.