Add device registry

- add RegistryController
- add DeviceRegistryService
- add Helper.kt
- add device registry property
- set up registry property

src/main/resources/META-INF/additional-spring-configuration-metadata.json

@@ -19,6 +19,11 @@
       "name": "spring.application.build.os.version",
       "type": "java.lang.String",
       "description": "Application build os version."
+    },
+    {
+      "name": "device-registry.url",
+      "type": "java.lang.String",
+      "description": "Url for device registry service."
     }
   ]
 }