Fuzzy match commands

[badBlackShark]

If someone tries to call a command that doesn't exist, it should be fuzzy matched instead. I would probably introduce a new dependency for this, but theoretically something like a Levenshtein distance could be implemented for the bot to "natively" use.

Now we have two options:

• Use the result of the fuzzy matched input. More convenient, but might introduce false positives.
• Instead, respond with a "Did you mean...?".
  • In this case, a self-programmed solution for fuzzy matching might be better, as then e.g. the top 3 results could be displayed.

This would probably need to go inside the prefix proc.