can not save the volume setting

[billzhuang]

set volume to 2, ctrl+c to quit.
start radio again, volume was set back to 9 again.

[JasonWei512]

This is not implemented yet.

Maybe a TOML config file named .code-radio-cli-config in %USERPROFILE% on Windows and ~ on Linux?

I tend to not implement this feature, because I want to keep this program clean and portable, leaves nothing behind after deleted.