Slash ability

[Keywarn]

• [x] Only allow in phantom mode
• [x] Animation state handling
• [x] Raycast check for enemy
  • [x] Trigger cutscene
  • [x] Use collider raycast locations
• [x] Cooldown
  • [x] VFX/Glint/indicator
• [ ] Death animation
• [ ] Refine particle effect for blood