feat: search component and loading splashscreen

spa/src/AppLoading.vue

@@ -0,0 +1,16 @@
+<template>
+  <div style="z-index: 99999" class="fixed top-0 left-0 w-full h-full bg-base-100">
+    <div class="flex flex-col items-center justify-center h-full">
+      <span class="loading loading-infinity loading-xl"></span>
+      <h1>Загрузка приложения...</h1>
+    </div>
+  </div>
+</template>
+
+<script setup>
+const props = defineProps({
+  error: Error,
+});
+</script>
+
+