Added search to serialinvoices

pages/createDocument/serialInvoice.vue

@@ -3,6 +3,19 @@
 <template>
   <UDashboardNavbar title="Serienrechnungen" :badge="filteredRows.length">
     <template #right>
+      <UInput
+          id="searchinput"
+          v-model="searchString"
+          icon="i-heroicons-funnel"
+          autocomplete="off"
+          placeholder="Suche..."
+          class="hidden lg:block"
+          @keydown.esc="$event.target.blur()"
+      >
+        <template #trailing>
+          <UKbd value="/" />
+        </template>
+      </UInput>
       <UButton
           @click="router.push(`/createDocument/edit?type=serialInvoices`)"
       >