Terminal.GUI / gui.cs : https://migueldeicaza.github.io/gui.cs/articles/overview.html

Spectre Console: https://spectreconsole.net/

To make yer console app work in the itch.io app, use a file called .itch.toml that looks kinda like:

[[actions]]
name = "play"
path = "EXAMPLE.exe"
console = true
[[prereqs]]
name = "net-runtime-5-x64"