feat(UI): 添加显示实体属性的面板和动画效果

添加新的输入动作"showFields"用于显示/隐藏实体属性面板
创建新的FieldShow组件用于显示实体属性值
为属性面板添加显示/隐藏动画效果
调整EntityBase中属性初始化的顺序

scripts/Statemachine/EntityBase.gd

@@ -73,9 +73,6 @@ func _ready():
 	else:
 		statebar = selfStatebar
 		statebar.entity = self
-	applyLevel()
-	health = fields.get(FieldStore.Entity.MAX_HEALTH)
-	energy = fields.get(FieldStore.Entity.MAX_ENERGY) * 0.5
 	if isPlayer():
 		statebar.levelLabels.hide()
 		UIState.player = self
@@ -99,6 +96,9 @@ func _ready():
 		)
 	else:
 		currentFocusedBoss = get_tree().get_nodes_in_group("players")[0]
+		applyLevel()
+	health = fields.get(FieldStore.Entity.MAX_HEALTH)
+	energy = fields.get(FieldStore.Entity.MAX_ENERGY) * 0.5
 	healthChanged.connect(
 		func(newHealth):
 			if is_instance_valid(statebar):