feat: 更新饲料和物品显示逻辑，添加香蕉饲料场景，重构字段显示功能

scripts/Statemachine/FieldShow.gd

@@ -1,12 +1,21 @@
 @tool
 extends HBoxContainer
+class_name FieldShow
 
 @export var field: FieldStore.Entity = FieldStore.Entity.MAX_HEALTH
-@export var value: String = ""
+@export var value: float = 0
 
 @onready var nameLabel: Label = $"%name"
 @onready var valueLabel: Label = $"%value"
 
-func _process(_delta):
+func _ready():
 	nameLabel.text = FieldStore.entityMap[field]
-	valueLabel.text = value
+	var formattedValue: String
+	var dataType = FieldStore.entityMapType[field]
+	if dataType == FieldStore.DataType.VALUE:
+		formattedValue = str(value)
+	elif dataType == FieldStore.DataType.ANGLE:
+		formattedValue = str(value) + "°"
+	elif dataType == FieldStore.DataType.PERCENT:
+		formattedValue = "%.1f" % (value * 100) + "%"
+	valueLabel.text = formattedValue