Fix: Move ONLINELIST_PRIVILEGE to end of enum to fix history host column data corruption

Commit 6d0b1bb (Feat: Add privilege column) inserted ONLINELIST_PRIVILEGE
at enum value 9, shifting INSTALLTIME from 9→10 and PATH from 12→13.
However, FileUpload_Lib (SimplePlugins) is compiled against a separate
copy of context.h that still uses the old enum values. Since
HostInfo.cpp's SaveClientMapData uses OLD enum values to read
sClientInfo[], it was reading privilegeStr for InstallTime and client
type for ProgramPath — corrupting the history host database.

Fix: move ONLINELIST_PRIVILEGE to value 16 (just before MAX), restoring
all original enum values (INSTALLTIME=9, PATH=12, etc.) so the
pre-built library can continue reading correct data without recompilation.

The 'permission' column now appears as the rightmost column in the
online host list instead of between 'version' and 'install time'.

Co-Authored-By: DeepSeek V4 Pro

server/2015Remote/context.h

@@ -14,7 +14,6 @@ enum {
     ONLINELIST_VIDEO,           // 摄像头(有无)
     ONLINELIST_PING,            // PING(对方的网速)
     ONLINELIST_VERSION,	        // 版本信息
-    ONLINELIST_PRIVILEGE,       // 权限级别 (SYSTEM/Admin/User)
     ONLINELIST_INSTALLTIME,     // 安装时间
     ONLINELIST_LOGINTIME,       // 活动窗口
     ONLINELIST_CLIENTTYPE,		// 客户端类型
@@ -22,6 +21,7 @@ enum {
     ONLINELIST_PUBIP,
     ONLINELIST_STARTTIME,
     ONLINELIST_CAPABILITIES,    // 客户端能力位
+    ONLINELIST_PRIVILEGE,       // 权限级别 (SYSTEM/Admin/User)
     ONLINELIST_MAX,
 };