feat(module): add support for vue using unplugin (#2416)

Co-authored-by: Benjamin Canac <canacb1@gmail.com>

test/utils/setup.ts

@@ -0,0 +1,8 @@
+// @ts-expect-error incomplete implementation
+window.IntersectionObserver = class IntersectionObserver {
+  // eslint-disable-next-line
+  constructor() {}
+  observe() {}
+  unobserve() {}
+  disconnect() {}
+}