Start submodule to impl the "Get ready" spinner

src/preparation_widget.rs

@@ -0,0 +1,33 @@
+use bevy::prelude::*;
+
+use crate::GameState;
+
+pub fn preparation_widget_plugin(app: &mut App) {
+	app.add_systems(OnEnter(GameState::GetReady), spawn_get_ready)
+		.add_systems(OnExit(GameState::GetReady), despawn_get_ready)
+		.add_systems(Update, (animate_get_ready_widget).run_if(in_state(GameState::GetReady)));
+}
+
+/// Marker component for things on the get-ready indicator
+#[derive(Component)]
+struct OnReadySetGo;
+
+/// Newtype wrapper for `Timer`. Used to count down during the "get ready" phase.
+#[derive(Component)]
+struct ReadySetGoTimer(Timer);
+
+fn spawn_get_ready(
+    mut commands: Commands,
+){
+    todo!();
+}
+
+fn despawn_get_ready(
+    mut commands: Commands,
+){
+    todo!();
+}
+
+fn animate_get_ready_widget(){
+    todo!();
+}