Switch to vkbeautify for XML

https://feedback.yaak.app/p/xml-pretty-formatter-not-rendering-correctly

src-web/lib/formatters.ts

@@ -1,3 +1,4 @@
+import vkBeautify from 'vkbeautify';
 import { invokeCmd } from './tauri';
 
 export async function tryFormatJson(text: string): Promise<string> {
@@ -23,8 +24,7 @@ export async function tryFormatXml(text: string): Promise<string> {
   if (text === '') return text;
 
   try {
-    const result = await invokeCmd<string>('cmd_format_xml', { text });
-    return result;
+    return vkBeautify.xml(text, '  ');
   } catch (err) {
     console.warn('Failed to format XML', err);
   }

src-web/lib/tauri.ts

@@ -15,7 +15,6 @@ type TauriCmd =
   | 'cmd_dismiss_notification'
   | 'cmd_export_data'
   | 'cmd_format_json'
-  | 'cmd_format_xml'
   | 'cmd_get_http_authentication_config'
   | 'cmd_get_http_authentication_summaries'
   | 'cmd_get_sse_events'