feat: Player attacking

- Added BpmTimer.accuracy method
- Added Weapon.attack_offset method
- Replaced beats_remaining with timer in Attacking and Awaiting
- AttackArea spawning on Attacking end

src/plugin.rs

@@ -25,6 +25,7 @@ impl Plugin for GamePlugin {
         ))
         .add_systems(Startup, setup)
         .add_systems(Update, (
+            combat::attack::update_attack_areas,
             player::systems::handle_input,
             timer::update_bpm_timers,
         ))