feat(hosts): add drag-and-drop and global subscription ordering (#6895)

Hosts already had one saved order on the Hosts page, but subscriptions honoured
it only inside each inbound, so a host of a later inbound could never come before
one of an earlier inbound (#6894). A new opt-in setting makes raw/base64,
Clash/Mihomo and JSON subscriptions follow the Hosts page order across inbounds;
the default keeps today's inbound-first output unchanged. The Hosts table gains
drag-and-drop reordering next to the Up/Down buttons, on a pointer-reorder hook
the Routing Rules table now shares.

frontend/src/models/setting.ts

@@ -1,5 +1,5 @@
 import { ObjectUtil } from '@/utils';
-import type { SubProfileMode } from '@/schemas/setting';
+import type { SubProfileMode, SubHostSortMode } from '@/schemas/setting';
 
 export class AllSetting {
   webListen = '';
@@ -20,6 +20,7 @@ export class AllSetting {
   remarkTemplate = '{{INBOUND}}-{{EMAIL}}|📊{{TRAFFIC_LEFT}}|⏳{{DAYS_LEFT}}D';
   subShowIdentityOnAllLinks = false;
   subInfoNodeEnable = false;
+  subHostSortMode: SubHostSortMode = 'inbound-first';
   subCalendarExpireInclusive = false;
   subExpiredTemplate = '⛔ {{EMAIL}} | Expired: {{EXPIRE_DATE}}';
   subTrafficDepletedTemplate =