Add a message object prompt type

[Euregan]

Is your feature request related to a problem?

I'm building a helper cli asking a user for inputs, but I also need to provide some extended information text between questions. If I use the message attribute of a prompt object, it can quickly become hard to read (In the source code), and the text block is prefixed with a ?, while the actual question line isn't.

Describe the solution you'd like

A new prompt object of type message, simply displaying an informative message.

I'd be happy to provide a PR if the feature is accepted. Sorry about the failed issue earlier.

[terkelg]

Thank you. I think this could be a great addition to Prompts. We're always open to PR in case you wanna give it a try

[guypursey]

For what it's worth, I'd welcome this addition too.

[Euregan]

Happy birthday to this issue! Sorry it took so long, here's a PR: https://github.com/terkelg/prompts/pull/262