tracking progress bar

src/components/index.ts

@@ -2,6 +2,7 @@ export { default as ClipboardButton } from './ClipboardButton.vue';
 export { default as Dropdown } from './Dropdown.vue';
 export { default as LoadingSpinner } from './LoadingSpinner.vue';
 export { default as Modal } from './Modal.vue';
+export { default as ProgressBar } from './ProgressBar.vue';
 export { default as SliderCheckbox } from './SliderCheckbox.vue';
 export { default as Tooltip } from './tooltip/Tooltip.vue';