frost ♡

Added group_search(), example: ` groups = client.group_search("Roblox", max_items=5) ` _returns PageIterator like client.user_search() does._  _added example to examples._ `Also my first ever pull request so tell me if I...

I made russian language for SBA Addon, i made it because im Russian and i love this addon-plugin. [language_ru.txt](https://github.com/pronze/SBA/files/8010266/language_ru.txt)