Feat: Add whitelist action to log-list right-click menu

Adds a "白名单" item after "解除封禁" in the message-log context menu.
It extracts the IP from each selected log entry, asks for confirmation,
then adds it to the shared IPWhitelist singleton — which IOCPServer and
the DLL rate limiter already consult live — so the entry takes effect on
new connections immediately, without a restart. The whitelist is
persisted to settings\IPWhitelist the same way the Network dialog does.

- An IP already in the whitelist is reported as such and skipped.
- An IP in the IP blacklist (banned) is reported as banned and skipped,
  rather than silently removed from the blacklist.
- Menu item, confirmation, and result strings are added to the
  en_US/zh_TW/de_DE language files.

Co-Authored-By: deepseek-v4-pro

server/2015Remote/resource.h

@@ -1010,6 +1010,7 @@
 #define ID_MSGLOG_LOGIN_NOTIFY          33079
 #define ID_MSGLOG_BAN_IP                33080
 #define ID_MSGLOG_UNBAN_IP              33081
+#define ID_MSGLOG_WHITELIST_IP          33096
 #define ID_WEB_REMOTE_CONTROL           33044
 #define ID_TOOL_PLUGIN_SETTINGS         33045
 #define ID_MCP_SETTINGS                 33077
@@ -1120,7 +1121,7 @@
 #ifdef APSTUDIO_INVOKED
 #ifndef APSTUDIO_READONLY_SYMBOLS
 #define _APS_NEXT_RESOURCE_VALUE        412
-#define _APS_NEXT_COMMAND_VALUE         33096
+#define _APS_NEXT_COMMAND_VALUE         33097
 #define _APS_NEXT_CONTROL_VALUE         2620
 #define _APS_NEXT_SYMED_VALUE           105
 #endif