♻️(project) rename project from "publish" to "impress"

The repository was renamed to "impress" but the code was still
mentionning "publish".

src/backend/core/apps.py

@@ -1,11 +1,11 @@
-"""publish Core application"""
+"""Impress Core application"""
 # from django.apps import AppConfig
 # from django.utils.translation import gettext_lazy as _
 
 
 # class CoreConfig(AppConfig):
-#     """Configuration class for the publish core app."""
+#     """Configuration class for the impress core app."""
 
 #     name = "core"
 #     app_label = "core"
-#     verbose_name = _("publish core application")
+#     verbose_name = _("impress core application")