Implement companion styling and animations

src/store.ts

@@ -1,12 +1,15 @@
 import create from 'zustand/vanilla';
 import { Scenes } from './scenes/scenes';
+import { CompanionState } from './ui/companion';
 
 export interface State {
   currentScene: Scenes;
+  companionState: CompanionState;
 }
 
 const store = create<State>(() => ({
   currentScene: Scenes.OVERVIEW,
+  companionState: CompanionState.IDLE,
 }));
 
 export default store;