feat(forums): add forum topics client service

modules/forums/client/services/topics.client.service.js

@@ -0,0 +1,19 @@
+(function () {
+  'use strict';
+
+  angular
+    .module('forums.services')
+    .factory('TopicsService', TopicsService);
+
+  TopicsService.$inject = ['$resource'];
+
+  function TopicsService($resource) {
+    return $resource('/api/topics/:forumId', {
+      forumId: '@_id'
+    }, {
+      update: {
+        method: 'PUT'
+      }
+    });
+  }
+}());