feat: export pdf worker warmup helper

Signed-off-by: Vitor Mattos <1079143+vitormattos@users.noreply.github.com>

Author: vitormattos

src/index.ts

@@ -4,7 +4,7 @@
 import type { App } from 'vue'
 import PDFElements from './components/PDFElements.vue'
 
-export { setWorkerPath } from './utils/asyncReader'
+export { ensureWorkerReady, setWorkerPath } from './utils/asyncReader'
 export type { PDFDocumentEntry, PDFElementObject, PDFElementsPublicApi } from './types'
 
 const install = (app: App) => {