fix: add No Sort option

Fix CorentinTh#764

Author: sharevb

src/tools/list-converter/list-converter.vue

@@ -4,6 +4,11 @@ import { convert } from './list-converter.models';
 import type { ConvertOptions } from './list-converter.types';
 
 const sortOrderOptions = [
+  {
+    label: 'No sort',
+    value: null,
+    disabled: false,
+  },
   {
     label: 'Sort ascending',
     value: 'asc',