Add Russian support

[ssslakter]

Possible solution is to use json files that used by yomitan dictionaries

[bakalover]

Looks cool. Considering JMDict

[ssslakter]

I found a library that can parse JMdict. So we can use it https://github.com/themoeway/jmdict-go Also I was thinking whether we should keep the dictionary in memory or load it into the database. I'm not sure how currently the words from jisho are implemented