feat: Implement Entity Suggestion Manager and Modal components

- Added EntitySuggestionManager.vue to manage entity suggestions and authentication.
- Created EntitySuggestionModal.vue for displaying suggestions and adding new entities.
- Integrated AuthManager for user authentication within the suggestion modal.
- Enhanced signal handling in start-servers.sh for graceful shutdown of servers.
- Improved server startup script to ensure proper cleanup and responsiveness to termination signals.
- Added documentation for signal handling fixes and usage instructions.

requirements.txt

@@ -37,6 +37,10 @@ flake8==7.1.1
 pytest==8.3.4
 pytest-django==4.10.0
 
+# Caching and Redis
+redis==5.2.1
+django-redis==5.4.0
+
 # WebSocket Support
 channels==4.2.0
 channels-redis==4.2.1