Add device registry

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

README.md

@@ -12,6 +12,7 @@ Classes and endpoints, to shape and to steer, Devices and sensors, their purpose
 | server.ssl.key-store          | *        | HTTP Keystore           |
 | server.ssl.key-store-type     | *        | HTTP Cert Type          |
 | server.ssl.key-store-password | **       | HTTP Cert Pass          |
+| device-registry.url           | *        | Device Register URL     |
 
 Required: * can be stored as text, and ** need to be stored as secret.