When adding a new variable or editing an existing one, if operation fails we do not display any feedback. With this feature we should display a toast message in that case
- Use the notification component from common-ui library.
- When the operation fails, remove the spinner and display the notification.
- Display this message in notification component: 'Variable could not be saved'
- Common-ui does not support dark theme yet, so we will see light theme of notifications in dark theme for now