feat: remember current tab

src/components/options/Display.vue

@@ -1,5 +1,5 @@
 <script setup lang="ts">
-import { Ref, computed, onMounted, ref } from 'vue';
+import { Ref, computed, ref } from 'vue';
 import InputNumber from 'primevue/inputnumber';
 import Select from 'primevue/select';
 import SelectButton from 'primevue/selectbutton';