Support CN Client

- Add Chinese region server key configuration
- Rename UserLoginEntity to OverseaUserLoginEntity and adjust package path
- Add ChinaUserLoginEntity entity class to support Chinese region user data structure
- Modify CommonConfigHandler to distinguish between Chinese and overseas configuration returns
- Update HandlerPlayerLoginReq to be compatible with Chinese region login token parsing
- Add /user/set-info and /user/send-sms interfaces in HttpServer
- Modify UserLoginHandler to support both Chinese and overseas user login logic
- Add mobile phone number + verification code login method support
- Add channel recognition logic to return corresponding regional user data

src/main/java/emu/nebula/GameConstants.java

@@ -22,6 +22,9 @@ public class GameConstants {
         
         RegionConfig.getRegion("tw")
             .setDataVersion(64);
+
+        RegionConfig.getRegion("cn")
+            .setDataVersion(64);
     }
     
     public static final ZoneId UTC_ZONE = ZoneId.of("UTC");