Add method for acquiring bot display name

[Zer0-One]

I'm trying to identify when someone mentions the bot (e.g @BotNameHere). Please consider either adding a Client property that contains the bot's display name, or adding a Message property that describes if the message is a mention to the bot.

[chillymosh]

This isn't an issue really and could have been a discussion. self.nick / self.bot.nick already exists so you can simply use this to check in your message.content.lower()

[Zer0-One]

Is there ever a situation where the IRC nick differs from a lowercased displayname or username? If not, then maybe the naming here could be made slightly less confusing.

>could have been a discussion

I don't use Discord.

[LostLuma]

https://github.com/PythonistaGuild/TwitchIO/discussions/categories/questions