Constant libnotcurses_sys::NCOPTION_SUPPRESS_BANNERS

pub const NCOPTION_SUPPRESS_BANNERS: u64 = crate::bindings::ffi::NCOPTION_SUPPRESS_BANNERS as u64; // 0x0000_0000_0000_0020u64

Do not print banners.

Notcurses typically prints version info in notcurses_init() and performance info in notcurses_stop(). This inhibits that output.