gate open animation using new movables

src/main.rs

@@ -3,6 +3,7 @@ mod camera;
 mod cash;
 mod gates;
 mod heads_ui;
+mod movables;
 mod platforms;
 mod player;
 mod tb_entities;
@@ -70,6 +71,7 @@ fn main() {
     app.add_plugins(heads_ui::plugin);
     app.add_plugins(gates::plugin);
     app.add_plugins(platforms::plugin);
+    app.add_plugins(movables::plugin);
 
     app.insert_resource(AmbientLight {
         color: Color::WHITE,