feat: 添加鸡蛋资源并实现字段显示优势功能

- 新增鸡蛋资源文件及导入配置
- 在FieldShow组件中添加showAdvantage属性控制优势显示
- 修正武器类默认名称错误
- 添加entityNegativeFields数组存储负数字段

components/Feeds/Egg.tscn

@@ -0,0 +1,22 @@
+[gd_scene load_steps=4 format=3 uid="uid://bkm51am35af20"]
+
+[ext_resource type="PackedScene" uid="uid://bykwevnv7keeh" path="res://components/Abstracts/FeedCardBase.tscn" id="1_pda12"]
+[ext_resource type="Texture2D" uid="uid://dhu2npe2hdg6m" path="res://resources/feeds/egg-a.svg" id="2_4crt5"]
+[ext_resource type="Texture2D" uid="uid://b7vxserbhskol" path="res://resources/feeds/banana.svg" id="2_4g6dr"]
+
+[node name="Egg" instance=ExtResource("1_pda12")]
+avatarTexture = ExtResource("2_4crt5")
+displayName = "鸡蛋"
+quality = 2
+topic = 3
+fields = Array[int]([3, 7])
+fieldValues = Array[float]([0.25, 10.0])
+costs = Array[int]([0, 1])
+costCounts = Array[int]([200, 100])
+
+[node name="avatar" parent="container/info" index="0"]
+texture = ExtResource("2_4g6dr")
+
+[node name="name" parent="container/info" index="1"]
+displayName = "香蕉"
+topic = 3