chore: scaffolding

src/app/mod.rs

@@ -2,11 +2,19 @@ use iced::{Color, Element, Renderer, Task, Theme, application, theme, widget};
 
 enum Message {}
 
-struct State {}
+enum Mode {
+    Focused(usize),
+    Gallery,
+}
+struct State {
+    mode: Mode,
+}
 
 impl State {
     fn new() -> Self {
-        Self {}
+        Self {
+            mode: Mode::Gallery,
+        }
     }
     fn update(&mut self, message: Message) -> Task<Message> {
         Task::none()