Refactor metrics handling and remove scheduler

- Removed the metrics scheduler functionality from the bot, transitioning to real-time metrics updates via middleware.
- Enhanced logging for metrics operations across various handlers to improve monitoring and debugging capabilities.
- Integrated metrics tracking for user activities and database errors, providing better insights into bot performance.
- Cleaned up code by removing obsolete comments and unused imports, improving overall readability and maintainability.

helper_bot/handlers/private/services.py

@@ -74,7 +74,6 @@ class UserService:
     
     @track_time("update_user_activity", "user_service")
     @track_errors("user_service", "update_user_activity")
-    @db_query_time("update_user_activity", "user_service")
     async def update_user_activity(self, user_id: int) -> None:
         """Update user's last activity timestamp with metrics tracking"""
         await self.db.update_user_date(user_id)
@@ -264,7 +263,7 @@ class PostService:
         await add_in_db_media(sent_message, self.db)
     
     @track_time("handle_media_group_post", "post_service")
-    @track_errors("post_service", "handle_media_group_post")
+    @track_errors("post_service", "handle_media_group_post")    
     async def handle_media_group_post(self, message: types.Message, album: list, first_name: str) -> None:
         """Handle media group post submission"""
         post_caption = " "