Remove items buttons: when the user swipes the item, show a snack bar instead

Change list item insert from button to swipe menu from the bottom

When the app works, before deploying to prod, the UI needs an improvement. The app should be more user-friendly, with also some animations and stuff like that

Fix ESLint errors in ListElement.tsx

const removeItem = () => { data[index] = undefined; data = formatArray(data); setData(data); };

The app gets slow when a list with many items is opened: loads every list item in the home screen