Implement Double Battles (#1)

* Add WiP logic for double battles

* Minor changes for double battles

* More fixes for double battles

* Show battle info for both in double battles

* Improvements to double battles

* Add double battle version of party UI

* Fix some issues with double battles

* Updates to double battles

* More work on double battles for stability

* Fix issues with ability bar and evolution screen

* Add chance for double battles

src/ui/evolution-scene-handler.ts

@@ -13,6 +13,12 @@ export default class EvolutionSceneHandler extends UiHandler {
       this.evolutionContainer = this.scene.add.container(0, -this.scene.game.canvas.height / 6);
       this.scene.fieldUI.add(this.evolutionContainer);
     }
+
+    show(_args: any[]): void {
+      super.show(_args);
+
+      this.scene.fieldUI.bringToTop(this.evolutionContainer);
+    }
   
     processInput(button: Button) {
       this.scene.ui.getMessageHandler().processInput(button);