chore(config): 迁移 sing-box 1.14 废弃配置

- 移除 DNS 配置中已废弃的 independent_cache
- 将远程规则集 download_detour 迁移为共享 http_clients
- 新增 07_http_clients.json 并通过 route.default_http_client 指定规则集下载客户端

Author: Fanju6

src/module/config/singbox/confdir/03_dns.json

@@ -80,7 +80,6 @@
         "server": "remote"
       }
     ],
-    "independent_cache": true,
     "strategy": "ipv4_only"
   }
 }

src/module/config/singbox/confdir/06_route.json

@@ -1,6 +1,7 @@
 {
   "route": {
     "default_domain_resolver": "ali",
+    "default_http_client": "rule-set-download",
     "rule_set": [
       {
         "tag": "block",
@@ -25,7 +26,6 @@
         "type": "remote",
         "format": "source",
         "url": "https://raw.githubusercontent.com/TG-Twilight/AWAvenue-Ads-Rule/refs/heads/main/Filters/AWAvenue-Ads-Rule-Singbox.json",
-        "download_detour": "Proxy",
         "update_interval": "24h",
         "path": "./source/AWAvenue.json"
       },
@@ -34,7 +34,6 @@
         "type": "remote",
         "format": "binary",
         "url": "https://raw.githubusercontent.com/CHIZI-0618/v2ray-rules-dat/release/singbox_rule_set/geosite-category-ads-all.srs",
-        "download_detour": "Proxy",
         "update_interval": "24h",
         "path": "./source/category-ads-all.srs"
       },
@@ -43,7 +42,6 @@
         "type": "remote",
         "format": "binary",
         "url": "https://raw.githubusercontent.com/SagerNet/sing-geosite/rule-set/geosite-alibaba.srs",
-        "download_detour": "Proxy",
         "update_interval": "24h",
         "path": "./source/alibaba.srs"
       },
@@ -52,7 +50,6 @@
         "type": "remote",
         "format": "binary",
         "url": "https://raw.githubusercontent.com/SagerNet/sing-geosite/rule-set/geosite-category-games@cn.srs",
-        "download_detour": "Proxy",
         "update_interval": "24h",
         "path": "./source/category-games@cn.srs"
       },
@@ -61,7 +58,6 @@
         "type": "remote",
         "format": "binary",
         "url": "https://raw.githubusercontent.com/CHIZI-0618/v2ray-rules-dat/release/singbox_rule_set/geosite-cn.srs",
-        "download_detour": "Proxy",
         "update_interval": "24h",
         "path": "./source/cn.srs"
       },
@@ -70,7 +66,6 @@
         "type": "remote",
         "format": "binary",
         "url": "https://raw.githubusercontent.com/MetaCubeX/meta-rules-dat/sing/geo/geoip/cn.srs",
-        "download_detour": "Proxy",
         "update_interval": "10d",
         "path": "./source/cn-ip.srs"
       }

src/module/config/singbox/confdir/07_http_clients.json

@@ -0,0 +1,8 @@
+{
+  "http_clients": [
+    {
+      "tag": "rule-set-download",
+      "detour": "Proxy"
+    }
+  ]
+}