Implement hitstun and knockback.

src/schedule.rs

@@ -23,6 +23,8 @@ pub enum GameplaySet {
     Animation,
     /// Resolve the integrated positions against the stage.
     Collision,
+    /// Resolve attacks
+    Attacks,
 }
 
 /// Declares the order of [`GameplaySet`] inside [`GgrsSchedule`]. Added by
@@ -40,6 +42,7 @@ impl Plugin for GameplaySchedulePlugin {
                 GameplaySet::Physics,
                 GameplaySet::Collision,
                 GameplaySet::Animation,
+                GameplaySet::Attacks,
             )
                 .chain(),
         );