[CGMZ] Hooks - Version Alpha R6

Hi all, today this plugin was updated to version AlphaR6!
This version adds some new hooks for [CGMZ] plugins which were missing hooks that I thought you may want to run custom JS code for. This new hooks include:
New Game Plus - Run custom JS code when a new game plus is started through [CGMZ] New Game Plus.
Actor Recruit - Run custom JS code when an actor is recruited through the [CGMZ] Recruitment Board
Skill Level Up - Run custom JS code when a skill levels up. Requires [CGMZ] Skill Levels.
- Added hook for new game plus start
- Added hook for actor recruit
- Added hook for when a skill levels up