Add tabs to the cockpit

thecockpit/src/main.rs

@@ -5,7 +5,7 @@ use thecockpit::app::App;
 
 fn main() {
     let mut terminal = ratatui::init();
-    let mut app = App::default();
+    let mut app = App::new();
 
     loop {
         terminal.draw(|frame| app.draw(frame));
@@ -16,6 +16,14 @@ fn main() {
                     code: event::KeyCode::Char('q'),
                     ..
                 }) => break,
+                event::Event::Key(event::KeyEvent {
+                    code: event::KeyCode::Left,
+                    ..
+                }) => app.prev_tab(),
+                event::Event::Key(event::KeyEvent {
+                    code: event::KeyCode::Right,
+                    ..
+                }) => app.next_tab(),
                 _ => {}
             }
         }