feat: Django backend foundation - project structure, dependencies, and documentation

- Created Django 4.2 project with production-ready architecture
- Installed 60+ packages including django-ninja, celery, channels, etc.
- Set up app structure (core, entities, moderation, users, versioning, media, notifications)
- Created comprehensive MIGRATION_PLAN.md with 12-phase roadmap
- Created README.md with setup instructions
- Created .env.example with all required configuration
- Configured for Python 3.13 compatibility
- All dependencies successfully installed and tested

Next steps: Configure Django settings and create base models

django/config/urls.py

@@ -0,0 +1,23 @@
+"""
+URL configuration for config project.
+
+The `urlpatterns` list routes URLs to views. For more information please see:
+    https://docs.djangoproject.com/en/4.2/topics/http/urls/
+Examples:
+Function views
+    1. Add an import:  from my_app import views
+    2. Add a URL to urlpatterns:  path('', views.home, name='home')
+Class-based views
+    1. Add an import:  from other_app.views import Home
+    2. Add a URL to urlpatterns:  path('', Home.as_view(), name='home')
+Including another URLconf
+    1. Import the include() function: from django.urls import include, path
+    2. Add a URL to urlpatterns:  path('blog/', include('blog.urls'))
+"""
+
+from django.contrib import admin
+from django.urls import path
+
+urlpatterns = [
+    path("admin/", admin.site.urls),
+]