Add action support for log running queries

[keeakita]

A user suggested something that they did in their bot:

Since the player query takes some time to retrieve, you should consider using sendChatAction(chat_id, action) so we know that the bot is alive

action being 'typing' or something else

(Note that they were talking about Python, the name of this command might be different in the Ruby API).

In short, the bot should call this method as soon as it starts processing a command, and possibly a cancellation method (I haven't looked much into this)