mls (v4.4) (#1753)

## Description:

mls for v25
Version identifier within MLS: v4.4

## Please complete the following:

- [x] I have added screenshots for all UI updates
- [x] I process any text displayed to the user through translateText()
and I've added it to the en.json file
- [x] I have added relevant tests to the test directory
- [x] I confirm I have thoroughly tested these changes and take full
responsibility for any bugs introduced
- [x] I have read and accepted the CLA agreement (only required once).

## Please put your Discord username so you can be contacted if a bug or
regression is found:

aotumuri

resources/lang/zh-CN.json

@@ -21,7 +21,9 @@
     "instructions": "操作说明",
     "how_to_play": "如何游玩",
     "advertise": "广告",
-    "wiki": "游戏百科"
+    "wiki": "游戏百科",
+    "privacy_policy": "隐私政策",
+    "terms_of_service": "服务条款"
   },
   "news": {
     "full_changelog": "查看完整的更新日志",
@@ -448,6 +450,7 @@
     "gold": "黄金",
     "ports": "港口",
     "cities": "城市",
+    "factories": "工厂",
     "missile_launchers": "导弹发射井",
     "sams": "防空塔",
     "warships": "军舰",
@@ -574,6 +577,9 @@
       "grogu": "格罗古"
     }
   },
+  "spawn_ad": {
+    "loading": "正在加载广告……"
+  },
   "auth": {
     "login_required": "需要登录才能访问此网站。",
     "redirecting": "正在将您重新定向……",