fix: augment vue rather than sub packages

src/components/Tippy.ts

@@ -3,7 +3,7 @@ import { TippyOptions } from '../types'
 import { useTippy } from '../composables'
 import tippy from 'tippy.js'
 
-declare module '@vue/runtime-core' {
+declare module 'vue' {
   interface ComponentCustomProps extends TippyOptions {
     to: string | Element
     tag: string