Add a custom .json template that uses the custom resolver

(cherry picked from commit 1434503)

Author: mrodbratschi

wrappercommon/src/main/java/com/genexus/diagnostics/core/provider/CustomEcsLayout.json

@@ -0,0 +1,57 @@
+{
+  "@timestamp": {
+    "$resolver": "timestamp",
+    "pattern": {
+      "format": "yyyy-MM-dd'T'HH:mm:ss.SSS'Z'",
+      "timeZone": "UTC"
+    }
+  },
+  "ecs.version": "1.2.0",
+  "log.level": {
+    "$resolver": "level",
+    "field": "name"
+  },
+  "message": {
+    "$resolver": "customMessage",
+    "stringified": true
+  },
+  "data": {
+    "$resolver": "map",
+    "key": "data"
+  },
+  "process.thread.name": {
+    "$resolver": "thread",
+    "field": "name"
+  },
+  "log.logger": {
+    "$resolver": "logger",
+    "field": "name"
+  },
+  "tags": {
+    "$resolver": "ndc"
+  },
+  "error.type": {
+    "$resolver": "exception",
+    "field": "className"
+  },
+  "error.message": {
+    "$resolver": "exception",
+    "field": "message"
+  },
+  "error.stack_trace": {
+    "$resolver": "exception",
+    "field": "stackTrace",
+    "stackTrace": {
+      "stringified": true
+    }
+  },
+  "context": {
+    "$resolver": "mdc",
+    "field": "context",
+    "stringified": false
+  },
+  "stackTrace": {
+    "$resolver": "map",
+    "key": "stackTrace"
+  }
+}