Add support for Persian/Arabic script + RTL languages

[Neon-Cube]

As of now, characters in the Persian/Arabic script show as boxes (unsupported).

Moreover, when setting the font to one that supports such characters, it's shown incorrectly. (LTR instead of RTL, not joined together)

Keep in mind, that the recently added Persian language WILL NOT WORK CORRECTLY if this enhancement is not added.