@uppy/vue: export FileInput (#4736)

packages/@uppy/vue/src/index.js

@@ -3,3 +3,4 @@ export { default as DashboardModal } from './dashboard-modal.js'
 export { default as DragDrop } from './drag-drop.js'
 export { default as ProgressBar } from './progress-bar.js'
 export { default as StatusBar } from './status-bar.js'
+export { default as FileInput } from './file-input.js'