feat: multi-select component (#5486)

* start multiselect component

* update styles

* small fix

* fix padding and styles

* add border bottom on sticky items

* add border bottom to search as well

* fix select all showing line

* use multi-select component for languages field

* add no options story for empty state

* fix height

packages/ui/src/components/base/index.ts

@@ -41,6 +41,8 @@ export { default as JoinedButtons } from './JoinedButtons.vue'
 export { default as LoadingIndicator } from './LoadingIndicator.vue'
 export { default as ManySelect } from './ManySelect.vue'
 export { default as MarkdownEditor } from './MarkdownEditor.vue'
+export type { MultiSelectOption } from './MultiSelect.vue'
+export { default as MultiSelect } from './MultiSelect.vue'
 export type { MaybeCtxFn, StageButtonConfig, StageConfigInput } from './MultiStageModal.vue'
 export { default as MultiStageModal, resolveCtxFn } from './MultiStageModal.vue'
 export { default as OptionGroup } from './OptionGroup.vue'