rdv: add route, twig for listing and creating calendar items

src/Bundle/ChillCalendarBundle/Resources/config/services.yml

@@ -0,0 +1,8 @@
+---
+services:
+
+    Chill\CalendarBundle\Repository\:
+        autowire: true
+        resource: '../../Repository/'
+        tags:
+            - { name: 'doctrine.repository_service' }