feat: 完成本地化代码并部分翻译

scenes/settings.tscn

@@ -23,7 +23,7 @@ offset_right = 193.0
 offset_bottom = 90.0
 theme_override_fonts/font = ExtResource("2_6wm04")
 theme_override_font_sizes/font_size = 30
-text = "数据源设置"
+text = "SETTINGS_SETSOURCE"
 
 [node name="LineEdit" type="LineEdit" parent="DataSetting" unique_id=34011310]
 offset_left = 217.0
@@ -44,7 +44,7 @@ offset_right = 193.0
 offset_bottom = 90.0
 theme_override_fonts/font = ExtResource("2_6wm04")
 theme_override_font_sizes/font_size = 30
-text = "自动识别IP地址的起始部分"
+text = "SETTINGS_IPBEGIN"
 
 [node name="LineEdit" type="LineEdit" parent="IPBeginSetting" unique_id=1179342188]
 offset_left = 424.0
@@ -65,7 +65,7 @@ offset_right = 193.0
 offset_bottom = 90.0
 theme_override_fonts/font = ExtResource("2_6wm04")
 theme_override_font_sizes/font_size = 30
-text = "局内显示昵称"
+text = "SETTINGS_NICKNAME"
 
 [node name="LineEdit" type="LineEdit" parent="UsernameSetting" unique_id=694430941]
 offset_left = 424.0
@@ -86,7 +86,7 @@ offset_right = 132.0
 offset_bottom = 40.0
 theme_override_fonts/font = ExtResource("2_6wm04")
 theme_override_font_sizes/font_size = 30
-text = "加载本地数据"
+text = "SETTINGS_LOADDATA"
 
 [node name="ChooseSource" type="OptionButton" parent="LoadSource" unique_id=1045074926]
 offset_left = 381.0
@@ -95,14 +95,39 @@ offset_right = 830.0
 offset_bottom = 60.0
 theme_override_font_sizes/font_size = 25
 
+[node name="ChooseLanguage" type="Node2D" parent="." unique_id=323270128]
+position = Vector2(39, 405)
+metadata/_edit_group_ = true
+
+[node name="ChooseLanguageLabel" type="Label" parent="ChooseLanguage" unique_id=1719434618]
+offset_left = 9.0
+offset_top = 10.0
+offset_right = 132.0
+offset_bottom = 40.0
+theme_override_fonts/font = ExtResource("2_6wm04")
+theme_override_font_sizes/font_size = 30
+text = "SETTINGS_CHOOSELANG"
+
+[node name="ChooseLanguage" type="OptionButton" parent="ChooseLanguage" unique_id=476490830]
+offset_left = 381.0
+offset_top = 5.0
+offset_right = 830.0
+offset_bottom = 60.0
+theme_override_font_sizes/font_size = 25
+item_count = 2
+popup/item_0/text = "en"
+popup/item_0/id = 0
+popup/item_1/text = "zh-cn"
+popup/item_1/id = 1
+
 [node name="SaveButton" type="Button" parent="." unique_id=1377249836]
-offset_left = 147.0
+offset_left = 132.0
 offset_top = 1315.0
-offset_right = 311.0
+offset_right = 338.0
 offset_bottom = 1392.0
 theme_override_fonts/font = ExtResource("2_6wm04")
 theme_override_font_sizes/font_size = 30
-text = "保存设置"
+text = "SETTINGS_SAVESETTINGS"
 
 [node name="DownloadButton" type="Button" parent="." unique_id=315804661]
 offset_left = 598.0
@@ -111,7 +136,7 @@ offset_right = 774.0
 offset_bottom = 1405.0
 theme_override_fonts/font = ExtResource("2_6wm04")
 theme_override_font_sizes/font_size = 30
-text = "下载文件"
+text = "SETTINGS_DOWNLOAD"
 
 [node name="CancelButton" type="Button" parent="." unique_id=135993345]
 offset_left = 371.0
@@ -120,7 +145,7 @@ offset_right = 550.0
 offset_bottom = 1394.0
 theme_override_fonts/font = ExtResource("2_6wm04")
 theme_override_font_sizes/font_size = 30
-text = "返回"
+text = "SETTINGS_BACK"
 
 [node name="LoadButton" type="Button" parent="." unique_id=2015694853]
 offset_left = 135.0
@@ -129,7 +154,7 @@ offset_right = 311.0
 offset_bottom = 1287.0
 theme_override_fonts/font = ExtResource("2_6wm04")
 theme_override_font_sizes/font_size = 30
-text = "加载数据"
+text = "SETTINGS_LOAD"
 
 [node name="Tips" type="Label" parent="." unique_id=1777076648]
 offset_left = 893.0
@@ -138,7 +163,7 @@ offset_right = 1920.0
 offset_bottom = 1388.0
 theme_override_fonts/font = ExtResource("2_6wm04")
 theme_override_font_sizes/font_size = 50
-text = "提示：无"
+text = "SETTINGS_TIP_NULL"
 
 [connection signal="pressed" from="SaveButton" to="." method="_on_save_button_pressed"]
 [connection signal="pressed" from="DownloadButton" to="." method="_on_download_button_pressed"]