Add the Chineses and Russian translations

[maikReal]

What to do?

• [x] We need to add the Chinese translation for the zkBob app @maxaleks
• [x] We need to ask the translator to make a PR to https://github.com/zkBob/docs/tree/main/zkbob-app/multilingual-support @maikReal

The translation file:

• zkbob chineses translation.json
• translation ru.json