feat(argparse): show available commands as choices for disable_command option

tg.py

@@ -2,7 +2,7 @@ import argparse
 
 from telebot import TeleBot
 
-from handlers import load_handlers
+from handlers import available_commands, load_handlers
 
 
 def main():
@@ -19,6 +19,7 @@ def main():
         dest="disable_commands",
         help="Specify a command to disable. Can be used multiple times.",
         default=[],
+        choices=available_commands(),
     )
 
     options = parser.parse_args()