Add device registry

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

http/registry.http

@@ -0,0 +1,7 @@
+### register device for a type
+POST {{hostname}}/register
+Content-Type: application/json
+
+{
+  "type": "00000000-0000-0000-0000-000000000000"
+}