Make !help dynamic

[mklarz]

We should rather use some form documentation per command instead of having to manually update a static variable for each time.

I suggest creating a decorator where we input the documentation/usage for that specific command, and then dynamically fetch all command decorators whenever someone types !help

[theS1LV3R]

Found this one, haven't tested it or checked how it looks: https://gist.github.com/That-Kidd/432b028352a44e434dfd54e3676a6a85

Based on purely looking through the code it looks like it should work