extract to file, primitive player system that is not actually run

src/game/player.rs

@@ -0,0 +1,14 @@
+use bevy::prelude::*;
+use bevy_rapier2d::prelude::*;
+
+use crate::AppState;
+#[derive(Component)]
+struct Player {}
+
+pub(super) fn player_plugin(app: &mut App) {
+    //app.add_systems(OnEnter(AppState::InGame), add_player.in_set(GameplaySet));
+}
+
+pub fn add_player(mut commands: Commands) {
+    commands.spawn(Player {});
+}