a note on Russian charset

[kambala-decapitator]

OpenD2/Shared/D2Shared.hpp

Line 46 in 065f6e4

* RUSSIAN (requires d2delta.mpq)

I've never tested d2delta.mpq approach, but a 100% working method with data folder and -direct is to use CYR charset. At least that's what I'm distributing for years in Russian translation of Median XL mods.

P.S. It was quite pleasant to see a piece of my own code :) https://github.com/eezstreet/OpenD2/blob/master/Engine/TBL_Text.hpp#L7