perf(font): 优化字体渲染并添加抗锯齿设置

- 在所有字体文件中添加 keep_rounding_remainders 属性，提高字体渲染质量
- 更新项目设置，启用抗锯齿功能
- 调整场景文件中的资源引用，添加 UID 信息

engine/scenes/launch/nodes/role.tscn

@@ -1,7 +1,7 @@
 [gd_scene load_steps=127 format=3 uid="uid://banx0453bykk4"]
 
 [ext_resource type="Texture2D" uid="uid://xgpv2ieftrut" path="res://assets/launch/nodes/role/roles.png" id="1_rgagr"]
-[ext_resource type="Script" path="res://scripts/launch/role/role.gd" id="1_tkfiu"]
+[ext_resource type="Script" uid="uid://bnlvbwww16bkt" path="res://scripts/launch/role/role.gd" id="1_tkfiu"]
 [ext_resource type="AudioStream" uid="uid://dboukgib28chm" path="res://assets/common/music/button_pressed.wav" id="2_p6qph"]
 [ext_resource type="Texture2D" uid="uid://ccemugihyuhrd" path="res://assets/launch/nodes/role/warrior/men/000000.png" id="3_1vfva"]
 [ext_resource type="Texture2D" uid="uid://b3ffqc8oj6mg5" path="res://assets/launch/nodes/role/mage/men/000080.png" id="3_qxja5"]