feat: add RocketIcon to Header component and update metadata with application icon

src/components/ui/index.ts

@@ -11,6 +11,7 @@ export { EditableWeeklyCheckInTitle } from './EditableWeeklyCheckInTitle';
 export { EditableWeatherTitle } from './EditableWeatherTitle';
 export { Input } from './Input';
 export { Modal, ModalFooter } from './Modal';
+export { RocketIcon } from './RocketIcon';
 export { Select } from './Select';
 export { Textarea } from './Textarea';
 export { ToggleGroup } from './ToggleGroup';