Add middleware and refactor admin handlers for improved functionality

- Introduced `DependenciesMiddleware` and `BlacklistMiddleware` for enhanced request handling across all routers.
- Refactored admin handlers to utilize new middleware, improving access control and error handling.
- Updated the `admin_router` to include middleware for access checks and streamlined the process of banning users.
- Enhanced the structure of admin handler imports for better organization and maintainability.
- Improved error handling in various admin functions to ensure robust user interactions.

helper_bot/handlers/group/constants.py

@@ -0,0 +1,14 @@
+"""Constants for group handlers"""
+
+from typing import Final
+
+# FSM States
+FSM_STATES: Final[dict[str, str]] = {
+    "CHAT": "CHAT"
+}
+
+# Error messages
+ERROR_MESSAGES: Final[dict[str, str]] = {
+    "NO_REPLY_TO_MESSAGE": "Блять, выдели сообщение!",
+    "USER_NOT_FOUND": "Не могу найти кому ответить в базе, проебали сообщение."
+}