feat(角色): 为动物角色添加掉落物品配置

为猫、狗和母鸡角色添加或修改掉落物品的配置，包括物品ID和掉落数量范围

components/Characters/Dog.tscn

@@ -38,6 +38,8 @@ radius = 27.018513
 [node name="Dog" instance=ExtResource("1_cbgnh")]
 script = ExtResource("2_pb36u")
 displayName = "哈士奇"
+drops = Array[int]([3])
+dropCounts = Array[Vector2]([Vector2(1, 3)])
 hurtAudioRate = 0.1
 
 [node name="hurt" parent="sounds" index="3"]