feat: Implement DownDash ability and related systems

- Added DownDash ability with cooldown and speed configuration.
- Introduced DownDashState to handle down dashing mechanics, including gravity manipulation and animation playback.
- Updated PlayerMovement to support DownDash functionality.
- Enhanced PlayerStats to manage spring charge consumption and healing.
- Modified PlayerCombat and WeaponHitBoxInstance to support new hit confirmation events.
- Updated AbilityType to include new form types for character abilities.
- Improved Gizmos for better visualization of enemy detection and attack ranges.
- Added feedback systems for form switching in PlayerFeedback and IFeedbackPlayer.
- Refactored combat and movement states to accommodate new abilities and ensure smooth transitions.

Assets/_Game/Scripts/Player/WeaponHitBoxInstance.cs

@@ -32,6 +32,9 @@ namespace BaseGames.Player
         /// <summary>下劈命中确认事件（供 DownAttackState Pogo 逻辑）。</summary>
         public event System.Action<DamageInfo> OnDownHitConfirmed;
 
+        /// <summary>任意 HitBox 命中确认事件（供 PlayerCombat 订阅通用命中反馈）。</summary>
+        public event System.Action<DamageInfo> OnHitConfirmed;
+
         private void Awake()
         {
             _allHitBoxes = GetComponentsInChildren<HitBox>(true);
@@ -41,6 +44,7 @@ namespace BaseGames.Player
 
         private void OnAnyHitConfirmed(DamageInfo info)
         {
+            OnHitConfirmed?.Invoke(info);
             if (_activeDir == AttackDirection.Down)
                 OnDownHitConfirmed?.Invoke(info);
         }