Add a comment field to events

While having good names on events and actions make understanding them easier, sometimes a new developer may be wondering how things fit together.

In the same way one would add a doc block on top of a function, it would be ideal to have documentation available for what events and actions do. This documentation, in the form of a description field can be displayed in the console for developers to consult and possibly export as more structured documentation.

With some guidance, I can implement this feature if you think it is a good idea