Ajout de la traduction (#15)

Co-authored-by: hugo.pradier2 <hugo.pradier2@etu.uca.fr>
Co-authored-by: clfreville2 <clement.freville2@etu.uca.fr>
Reviewed-on: https://codefirst.iut.uca.fr/git/clement.freville2/herbarium/pulls/15
Reviewed-by: Clément FRÉVILLE <clement.freville2@etu.uca.fr>
Co-authored-by: Hugo PRADIER <hugo.pradier2@etu.uca.fr>
Co-committed-by: Hugo PRADIER <hugo.pradier2@etu.uca.fr>

templates/species/new.html.twig

@@ -3,9 +3,9 @@
 {% block title %}New Species{% endblock %}
 
 {% block body %}
-    <h1>Create new Species</h1>
+    <h1>{{ 'create_new_species'|trans }}</h1>
 
     {{ include('species/_form.html.twig') }}
 
-    <a href="{{ path('app_species_index') }}">back to list</a>
+    <a href="{{ path('app_species_index') }}">{{ 'back_to_list'|trans }}</a>
 {% endblock %}