feat: Surge Hysteria2 输出增加 download-bandwidth(若有值但解析失败则为 0)

backend/package.json

@@ -1,6 +1,6 @@
 {
   "name": "sub-store",
-  "version": "2.14.68",
+  "version": "2.14.69",
   "description": "Advanced Subscription Manager for QX, Loon, Surge, Stash and ShadowRocket.",
   "main": "src/main.js",
   "scripts": {

backend/src/core/proxy-utils/producers/surge.js

@@ -409,6 +409,12 @@ function hysteria2(proxy) {
         'underlying-proxy',
     );
 
+    // download-bandwidth
+    result.appendIfPresent(
+        `,download-bandwidth=${`${proxy['down']}`.match(/\d+/)?.[0] || 0}`,
+        'down',
+    );
+
     return result.toString();
 }