Support for bot detection

[Mte90]

As we need to check if the user is a bot (and allow it) or specific users.

[rokcarl]

Can you add the user to the list of admin users?

If not, you can easily add support for this in the check_message method.

[Mte90]

Yes it isn't a problem the users but the bot.
We are doing some evaluations if still continue with our bot or switch to someone else that works.
As example, we need just a channel where only bots can write and not the users.