[tor-l10n] new resource: onionsproutsbot

I have added a new resource for translation:

This is a Telegram bot that allows you to download Tor Browser over Telegram. It also provides some basic instructions and other download URLs. This is useful when the Tor Project page is blocked.

I have added some screenshots so you can have an idea of the interaction.

It is a very small document, only 21 strings with 285 words. Perfect for a rainy day!

If you want to translate, please go here: https://www.transifex.com/otf/torproject/onionsproutsbot/

Thanks in advance!

emmapeel