database done + popup start

src/focused.rs

@@ -0,0 +1,10 @@
+use crossterm::event::KeyEvent;
+
+use crate::database::DB;
+use crate::events::AppEvent;
+
+pub trait Focused {
+    fn take_focus(&mut self);
+    fn lose_focus(&mut self);
+    fn handle_input(&mut self, key_event: KeyEvent, db: &mut DB) -> Option<Vec<AppEvent>>;
+}