Message 298190 - Python tracker

Hello to all of you, sorry for the delay. Been busy.

I added the base code needed to built the grapheme cluster break algorithm. We now have the GraphemeBreakProperty available via unicodedata.grapheme_cluster_break()

Can you check that the implementation correctly fits the design? I was not sure about adding that prop to unicodedata_db ou unicodectype_db, tbh.

If it's all correct, I'll move forward with the automaton and the grapheme cluster breaking algorithm.

Thanks!