Add resolved service and DNS server

docs/configuration/dns/server/resolved.md

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+---
+icon: material/new-box
+---
+
+!!! question "Since sing-box 1.12.0"
+
+# Resolved
+
+```json
+{
+  "dns": {
+    "servers": [
+      {
+        "type": "resolved",
+        "tag": "",
+
+        "service": "resolved",
+        "accept_default_resolvers": false
+      }
+    ]
+  }
+}
+```
+
+
+### Fields
+
+#### service
+
+==Required==
+
+The tag of the [Resolved Service](/configuration/service/resolved).
+
+#### accept_default_resolvers
+
+Indicates whether the default DNS resolvers should be accepted for fallback queries in addition to matching domains.
+
+Specifically, default DNS resolvers are DNS servers that have `SetLinkDefaultRoute` or `SetLinkDomains ~.` set.
+
+If not enabled, `NXDOMAIN` will be returned for requests that do not match search or match domains.
+
+### Examples
+
+=== "Split DNS only"
+
+    ```json
+    {
+      "dns": {
+        "servers": [
+          {
+            "type": "local",
+            "tag": "local"
+          },
+          {
+            "type": "resolved",
+            "tag": "resolved",
+            "service": "resolved"
+          }
+        ],
+        "rules": [
+          {
+            "ip_accept_any": true,
+            "server": "resolved"
+          }
+        ]
+      }
+    }
+    ```
+
+=== "Use as global DNS"
+
+    ```json
+    {
+      "dns": {
+        "servers": [
+          {
+            "type": "resolved",
+            "service": "resolved",
+            "accept_default_resolvers": true
+          }
+        ]
+      }
+    }
+    ```