currently, admin users are verified from the [config file](https://github.com/birlug/WiseAssBot/blob/482e12cb5abe3ac102308a1b7e86eb388e52575f/config-example.toml#L3). update the implementation to use the telegram api for checking admin users instead. https://github.com/birlug/WiseAssBot/blob/482e12cb5abe3ac102308a1b7e86eb388e52575f/config-example.toml#L3