Enhance bot functionality and refactor database interactions

- Added `ca-certificates` installation to Dockerfile for improved network security.
- Updated health check command in Dockerfile to include better timeout handling.
- Refactored `run_helper.py` to implement proper signal handling and logging during shutdown.
- Transitioned database operations to an asynchronous model in `async_db.py`, improving performance and responsiveness.
- Updated database schema to support new foreign key relationships and optimized indexing for better query performance.
- Enhanced various bot handlers to utilize async database methods, improving overall efficiency and user experience.
- Removed obsolete database and fix scripts to streamline the project structure.

requirements.txt

@@ -18,6 +18,11 @@ apscheduler~=3.10.4
 prometheus-client==0.19.0
 aiohttp==3.9.1
 
+# Network stability improvements
+aiohttp[speedups]>=3.9.1
+aiodns>=3.0.0
+cchardet>=2.1.7
+
 # Development tools
 pluggy==1.5.0
 attrs~=23.2.0