Guess input w/o !guess command

[gobo7793]

What's your feature request? Please describe the user story.
As user I want to guessing a number without input !guess and only with .

Describe the solution you'd like (acceptance criteria)

• !guess start (or similar to start the guess)
• Type 50 (without !guess)
• Bot prints if number is too low, high or correct.

This means, following sould be a valid input:

<User> !guess
<Bot> You can now start guessing between 1 and 100
<Bot>Please enter a number starting from 1!
<User> 50