Added three new martial art buff events

[Hymore246]

Summary

SUMMARY: Content "Added support for OnMiss, OnCrit, and OnKill martial arts buff events."

Purpose of change

This change adds support for three brand new buff events to the martial arts system: OnMiss, OnCrit, and OnKill.

Describe the solution

These are implemented and work the same way as other buff events like OnHit, OnBlock, etc.
How each buff works is detailed below:

• OnMiss - Triggers when the player misses with an attack. "Feinting" counts as a miss.
• OnCrit - Triggers when the player scores a critical hit with an melee attack.
• OnKill - Triggers when a player kills something with a melee attack.

For sake of demonstration, I have given Debug Mastery each of these new buffs for those who want to see them in action. Currently, no normally obtainable martial arts style has been changed to use these new buffs but they may be updated in the future to use them if need be.