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/private/private_handlers.py

@@ -1,28 +1,30 @@
-import random
-import traceback
-import asyncio
-import html
-from datetime import datetime
-from pathlib import Path
+"""Main private handlers module for Telegram bot"""
 
+# Standard library imports
+import asyncio
+from datetime import datetime
+
+# Third-party imports
 from aiogram import types, Router, F
 from aiogram.filters import Command, StateFilter
 from aiogram.fsm.context import FSMContext
-from aiogram.types import FSInputFile
 
+# Local imports - filters and middlewares
 from helper_bot.filters.main import ChatTypeFilter
-from helper_bot.keyboards import get_reply_keyboard, get_reply_keyboard_for_post
-from helper_bot.keyboards.keyboards import get_reply_keyboard_leave_chat
 from helper_bot.middlewares.album_middleware import AlbumMiddleware
 from helper_bot.middlewares.blacklist_middleware import BlacklistMiddleware
-from helper_bot.utils import messages
-from helper_bot.utils.helper_func import get_first_name, get_text_message, send_text_message, send_photo_message, \
-    send_media_group_message_to_private_chat, prepare_media_group_from_middlewares, send_video_message, \
-    send_video_note_message, send_audio_message, send_voice_message, add_in_db_media, \
-    check_user_emoji, check_username_and_full_name, update_user_info
-from logs.custom_logger import logger
 
-# Import new modular components
+# Local imports - utilities
+from helper_bot.keyboards import get_reply_keyboard, get_reply_keyboard_for_post
+from helper_bot.keyboards.keyboards import get_reply_keyboard_leave_chat
+from helper_bot.utils import messages
+from helper_bot.utils.helper_func import (
+    get_first_name, 
+    update_user_info, 
+    check_user_emoji
+)
+
+# Local imports - modular components
 from .constants import FSM_STATES, BUTTON_TEXTS, ERROR_MESSAGES
 from .services import BotSettings, UserService, PostService, StickerService
 from .decorators import error_handler
@@ -112,10 +114,7 @@ class PrivateHandlers:
         
         markup = types.ReplyKeyboardRemove()
         suggest_news = messages.get_message(get_first_name(message), 'SUGGEST_NEWS')
-        await message.answer(suggest_news)
-        await asyncio.sleep(0.3)
-        suggest_news_2 = messages.get_message(get_first_name(message), 'SUGGEST_NEWS_2')
-        await message.answer(suggest_news_2, reply_markup=markup)
+        await message.answer(suggest_news, reply_markup=markup)
     
     @error_handler
     async def end_message(self, message: types.Message, state: FSMContext, **kwargs):