Add resource-config.json to JTL

Author: ppkarwasz

log4j-layout-template-json/src/main/resources/META-INF/native-image/org.apache.logging.log4j/log4j-layout-template-json/resource-config.json

@@ -0,0 +1,9 @@
+{
+  "resources": {
+    "includes": [
+      {
+        "pattern": "((Ecs|Gcp|Gelf|Json|StackTraceElement)Layout|LogstashJsonEventLayoutV1)\\.json"
+      }
+    ]
+  }
+}