Update voice bot functionality and clean up project structure

- Added voice message handling capabilities, including saving and deleting audio messages via callback queries.
- Refactored audio record management in the database to remove unnecessary fields and streamline operations.
- Introduced new keyboard options for voice interactions in the bot.
- Updated `.gitignore` to include voice user files for better project organization.
- Removed obsolete voice bot handler files to simplify the codebase.

helper_bot/handlers/private/constants.py

@@ -17,7 +17,8 @@ BUTTON_TEXTS: Final[Dict[str, str]] = {
     "LEAVE_CHAT": "Выйти из чата",
     "RETURN_TO_BOT": "Вернуться в бота",
     "WANT_STICKERS": "🤪Хочу стикеры",
-    "CONNECT_ADMIN": "📩Связаться с админами"
+    "CONNECT_ADMIN": "📩Связаться с админами",
+    "VOICE_BOT": "🎤Голосовой бот"
 }
 
 # Button to command mapping for metrics
@@ -27,7 +28,8 @@ BUTTON_COMMAND_MAPPING: Final[Dict[str, str]] = {
     "Выйти из чата": "leave_chat",
     "Вернуться в бота": "return_to_bot",
     "🤪Хочу стикеры": "want_stickers",
-    "📩Связаться с админами": "connect_admin"
+    "📩Связаться с админами": "connect_admin",
+    "🎤Голосовой бот": "voice_bot"
 }
 
 # Error messages