Hooks / Event Listeners

[MrXyfir]

Add ability to pass functions to the Express middleware that will be called when a certain action occurs:

• Insert row
• Delete row
• Edit row
• etc

Ability for each hook on each action to be global or only for specific tables.

Maybe both pre and post hooks for each event as well, where the pre-event hooks can control the response and whether or not Admyn's actual controller for that action is called.