feat(responsiveManager): add a manager to monitor responsive state and give access to responsive state flags

src/shared/lib/helpers/index.ts

@@ -33,3 +33,9 @@ export {
 } from './createCharacterComparison/createCharacterComparison.svelte';
 
 export { createPersistentStore } from './createPersistentStore/createPersistentStore.svelte';
+
+export {
+    createResponsiveManager,
+    type ResponsiveManager,
+    responsiveManager,
+} from './createResponsiveManager/createResponsiveManager.svelte';