feat(index): add a prop to toggle auto search on load

users can now turn off the initial query to Algolia on page rendering.
this feature is especially helpful for users doing SSR that do not want to generate
a call to Algolia because hydration has already be done in the backend.

Closes: #261

src/components/Index.vue

@@ -57,6 +57,10 @@ export default {
       type: Boolean,
       default: true,
     },
+    autoSearch: {
+      type: Boolean,
+      default: true,
+    }
   },
   data() {
     return {
@@ -97,6 +101,9 @@ export default {
   },
   mounted() {
     this._localSearchStore.start();
+    if (this.autoSearch) {
+      this._localSearchStore.refresh();
+    }
   },
   watch: {
     indexName() {