feat: Added "!insult" command

[ghost]

This command will pick a random insult, and send on the channel. You can
also select the person to insult too.
Example:

!insult
!insult @someone
!insult @foo @bar

[bramz]

Looks clean, my only request is a possible name change for this. Some suggestions/ideas abuse, taunt, offend? I suppose the term insult could seem a bit harsh and maybe we should take a lighter approach here, I'm leaning more towards, taunt.

Also, if you could amend your commit message to remove feat:. This is simply my OCD at play here. I think it looks a bit cleaner, basically, all my commits follow this style. I am aware agro's do not but I plan on asking him to follow in future as well.

[ncatelli]

These insults are terrible.

[ghost]

We can always edit it though.

[ghost]

Due to lack of better insults, I am cancelling the PR. Will submit again after I find a good list of insults.

[bramz]

So as we discussed on discord, feature functionality could be something similar to the following.

!insult output random insult at the user who triggered insult
!insult @user output random insult at specified user
!insult add <insult here> add insult to database
!insult del <id> delete insult from database

Add a table to migrations, and use postgres or you can simply append to the flat file, your choice.

[bramz]

Consider this schema, extend upon this or simply add it to migrations.

CREATE TABLE insults (
  id serial primary key,
  creator text not null,
  insult text not null
);

[bramz]

As you mentioned, the addition of an insulting message is not capped, thus allowing the full 2k message limit of discord to be used. A max length of 500 for insulting messages should suffice.

[bramz]

You should declare this as a constant.

[ghost]

Okay