[Identity] Expose creation service as provider

Expose creation service as a provider of a composite service;
this allows it to be decorated by the identity bundle to
attach a creator, for nasa/openmct#92

platform/commonUI/browse/bundle.json

@@ -88,11 +88,6 @@
             {
                 "key": "navigationService",
                 "implementation": "navigation/NavigationService.js"
-            },
-            {
-                "key": "creationService",
-                "implementation": "creation/CreationService.js",
-                "depends": [ "persistenceService", "$q", "$log" ]
             }
         ],
         "actions": [
@@ -141,6 +136,13 @@
                 "type": "provider",
                 "implementation": "creation/CreateActionProvider.js",
                 "depends": [ "typeService", "dialogService", "creationService", "policyService" ]
+            },
+            {
+                "key": "CreationService",
+                "provides": "creationService",
+                "type": "provider",
+                "implementation": "creation/CreationService.js",
+                "depends": [ "persistenceService", "$q", "$log" ]
             }
         ],
         "runs": [