Add a function to check for Cyrillic characters

[Valentin Sonin]

Due to the existence of an unofficial Russian translation of the game, please add a function to check the string for Cyrillic to avoid translating already translated strings.

Regex: [ЁёА-я]

You can just make a parameter in settings and a bool function, I can write the logic for checking it myself.

[Dante Souza e Souza]

this issue is related to this one: #71