feat(武器系统): 调整核弹伤害参数并添加屏幕震动效果

- 降低核弹基础伤害但提高升级后伤害
- 修改爆炸半径范围描述
- 为核弹爆炸添加随时间递减的屏幕震动效果
- 重构CameraManager的shake方法以支持自定义震动曲线

scripts/Tools/CameraManager.gd

@@ -15,9 +15,14 @@ func _physics_process(_delta):
 		position = UIState.player.position
 		position += MathTool.randv2_range(shakeIntensity)
 
-static func shake(millseconds: int, intensity: float = 10):
-	instance.shakeIntensity += intensity
-	await TickTool.millseconds(millseconds)
-	instance.shakeIntensity -= intensity
+static func shake(millseconds: float, intensity: float = 10, steper: Callable = func(currentValue, _totalValue, _restPercent): return currentValue):
+	var startTime = WorldManager.getTime()
+	instance.shakeIntensity = intensity
+	await TickTool.until(
+		func():
+			instance.shakeIntensity = steper.call(instance.shakeIntensity, intensity, 1 - (WorldManager.getTime() - startTime) / millseconds)
+			return WorldManager.getTime() - startTime >= millseconds
+	)
+	instance.shakeIntensity = 0
 static func playAnimation(animation: String):
 	instance.animator.play(animation)