add message update service

src/scripts/message-update-api.service.coffee

@@ -0,0 +1,29 @@
+'use strict'
+
+transformResponse = (response) ->
+  parsed = JSON.parse response
+
+  parsed?.result?.content || []
+
+srv = ($resource, API_URL) ->
+  url = API_URL + '/v3/inboxes/:workId/messages/:messageId'
+
+  params =
+    workId:    '@workId'
+    messageId: '@messageId'
+
+  methods =
+    post:
+      method: 'POST'
+
+    patch:
+      method: 'PATCH'
+
+    put:
+      method: 'PUT'
+
+  $resource url, {}, methods
+
+srv.$inject = ['$resource', 'API_URL']
+
+angular.module('appirio-tech-ng-api-services').factory 'MessageUpdateAPIService', srv