Update release config

common/debugio/print.go

@@ -0,0 +1,19 @@
+package debugio
+
+import (
+	"fmt"
+	"reflect"
+
+	"github.com/sagernet/sing/common"
+)
+
+func PrintUpstream(obj any) {
+	for obj != nil {
+		fmt.Println(reflect.TypeOf(obj))
+		if u, ok := obj.(common.WithUpstream); !ok {
+			break
+		} else {
+			obj = u.Upstream()
+		}
+	}
+}