Added user types to filter the tools based on targeted audience

src/pages/tools/string/rot13/meta.ts

@@ -10,5 +10,6 @@ export const tool = defineTool('string', {
     'A simple tool to encode or decode text using the ROT13 cipher, which replaces each letter with the letter 13 positions after it in the alphabet.',
   shortDescription: 'Encode or decode text using ROT13 cipher.',
   keywords: ['rot13'],
+  userTypes: ['Developers', 'CyberSec', 'Students'],
   component: lazy(() => import('./index'))
 });