Add Support for Telegram

Telegram already has "more than 100,000,000 monthly active users" with "350,000 new users" signing up each day and it delivers "15 billion messages daily" according to a post from February found in

Also, Telegram clients are open source:

Some work is being done, as we can see here:

But I still wonder why is it taking so long to have a working protocol for Telegram, thus the ticket.