Add feature to install chat on the home screen

Signed-off-by: Emmy D'Anello <emmy.danello@animath.fr>

chat/urls.py

@@ -2,6 +2,7 @@
 # SPDX-License-Identifier: GPL-3.0-or-later
 
 from django.urls import path
+from django.views.generic import TemplateView
 
 from .views import ChatView
 
@@ -10,4 +11,5 @@ app_name = 'chat'
 
 urlpatterns = [
     path('', ChatView.as_view(), name='chat'),
+    path('fullscreen/', TemplateView.as_view(template_name="chat/fullscreen.html"), name='fullscreen'),
 ]