BAEL-8853 Merge jsonb module into another module

- Moved jsonb module resources to json module and deleted jsonb module

json/src/main/java/com/baeldung/adapter/PersonAdapter.java

@@ -0,0 +1,26 @@
+package com.baeldung.adapter;
+
+import javax.json.Json;
+import javax.json.JsonObject;
+import javax.json.bind.adapter.JsonbAdapter;
+
+import com.baeldung.jsonb.Person;
+
+public class PersonAdapter implements JsonbAdapter<Person, JsonObject> {
+
+    @Override
+    public JsonObject adaptToJson(Person p) throws Exception {
+        return Json.createObjectBuilder()
+            .add("id", p.getId())
+            .add("name", p.getName())
+            .build();
+    }
+
+    @Override
+    public Person adaptFromJson(JsonObject adapted) throws Exception {
+        Person person = new Person();
+        person.setId(adapted.getInt("id"));
+        person.setName(adapted.getString("name"));
+        return person;
+    }
+}