Adding configuration example

registrar/config.yaml → registrar/config-sample.yaml

 routes:
   items:
-    type: STAC-Item
+    path: registrar.route.stac.ItemRoute
     queue: register
     success_queue: seed
     error_queue: error
     replace: true
     backends:
-      - path: registrar.backend.eoxserver.EOxServerItemBackend
+      - path: registrar.backend.eoxserver.ItemBackend
         kwargs:
 
-    handlers:
-      pre:
-      post:
-      error:
-
   collections:
-    type: STAC-Collection
+    path: registrar.route.stac.CollectionRoute
     queue: register-collections
     backends:
-      - path: registrar.backend.eoxserver.EOxServerCollectionBackend
+      - path: registrar.backend.eoxserver.CollectionBackend
         kwargs:
 
-    handlers:
-      pre:
-      post:
-      error:
-
   path:
-    type: path
+    pyth: registrar.route.path.PathRoute
     queue: register-paths
     backends:
       - path: some.path.backend
         kwargs:
 
-    handlers:
-      pre:
-      post:
-      error:
+
+  application:
+    path: registrar.route.path.JSONRoute
+    queue: register-applications
+    kwargs:
+      href_field: "href"
+    backends:
+      - path: registrar_pycsw.backend.CWLBackend
 
 sources:
 ...
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