Function process_key_event 

pub(crate) fn process_key_event(
    ev: KeyEvent,
    repeat_count: u32,
    terminal: &mut Terminal,
    kbd: &mut Keyboard,
    ime_state: &mut ImeState,
    login_mgr: &mut LoginManager,
    sysmon_pane: &mut SystemMonitorPane,
    _power_modal_visible: &mut bool,
    screen: &Screen,
    shortcut_mgr: &ShortcutManager,
)