Add decode_supergroup_chat, decode_channel_chat and decode_channel_with_username_chat tests
Add decode_supergroup_chat, decode_channel_chat and decode_channel_with_username_chat tests

LukasKalbertodt/telegram-bot,rockneurotiko/telegram-bot-1,White-Oak/telegram-bot,rockneurotiko/telegram-bot-1,telegram-rs/telegram-bot