Add django-filters to default project template's INSTALLED_APPS

wagtail/project_template/project_name/settings/base.py

@@ -39,6 +39,7 @@ INSTALLED_APPS = [
     "wagtail",
     "modelcluster",
     "taggit",
+    "django_filters",
     "django.contrib.admin",
     "django.contrib.auth",
     "django.contrib.contenttypes",