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/generated/schemas.ts

@@ -324,6 +324,10 @@ export const SCHEMAS: Record<string, unknown> = {
       "subHideSettings": {
         "type": "boolean"
       },
+      "subHostSortMode": {
+        "example": "inbound-first",
+        "type": "string"
+      },
       "subIncyAnnounceUrl": {
         "type": "string"
       },
@@ -679,6 +683,7 @@ export const SCHEMAS: Record<string, unknown> = {
       "subHappTunMode",
       "subHappTunType",
       "subHideSettings",
+      "subHostSortMode",
       "subIncyAnnounceUrl",
       "subIncyAppAutoDetect",
       "subIncyBannerBgColor",
@@ -1110,6 +1115,10 @@ export const SCHEMAS: Record<string, unknown> = {
       "subHideSettings": {
         "type": "boolean"
       },
+      "subHostSortMode": {
+        "example": "inbound-first",
+        "type": "string"
+      },
       "subIncyAnnounceUrl": {
         "type": "string"
       },
@@ -1473,6 +1482,7 @@ export const SCHEMAS: Record<string, unknown> = {
       "subHappTunMode",
       "subHappTunType",
       "subHideSettings",
+      "subHostSortMode",
       "subIncyAnnounceUrl",
       "subIncyAppAutoDetect",
       "subIncyBannerBgColor",