docs: add algolia search

Author: afontcu

docs/.vitepress/config.js

@@ -18,6 +18,13 @@ const config = {
     docsDir: 'docs',
     docsBranch: 'master',
     editLinks: true,
+    algolia: {
+      apiKey: 'ee1b8516c9e5a5be9b6c25684eafc42f',
+      indexName: 'vue_test_utils',
+      algoliaOptions: {
+        facetFilters: ['tags:next']
+      }
+    },
     nav: [
       { text: 'Guide', link: '/introduction/' },
       { text: 'API Reference', link: '/api/' },