add main routes and templates

templates/product/new.html.twig

@@ -0,0 +1,19 @@
+{% extends 'base.html.twig' %}
+
+{% block body %}
+    <h1>Product creation</h1>
+
+    {{ form_start(form) }}
+    {{ form_widget(form) }}
+    <input type="submit"  class="btn btn-primary btn-block" value="Créer"/>
+    {{ form_end(form) }}
+
+    <ul>
+        <li>
+            <a class="btn btn-primary" href="{{ path('product_index') }}">
+                <i class="fa fa-arrow-left"></i>
+                Retour à la liste
+            </a>
+        </li>
+    </ul>
+{% endblock %}