fix: fix config serialization

Author: OEOTYAN

src/main/kotlin/com/liteldev/headeroutput/config/OutputConfig.kt

@@ -16,6 +16,7 @@ data class OutputConfig(
     @Serializable
     data class Sort(
         val parent: List<Parent>,
+        val namespace: List<Namespace>,
         val regex: List<Regex>
     ) {
         @Serializable
@@ -24,6 +25,12 @@ data class OutputConfig(
             val dst: String
         )
 
+        @Serializable
+        data class Namespace(
+            val namespace: String,
+            val dst: String
+        )
+
         @Serializable
         data class Regex(
             val regex: String,