implemented creation of new user

frontend/src/routes/user/List.svelte

@@ -28,10 +28,16 @@
             for (let key of Object.keys(json)) user[key] = json[key];
         }
     }
+
 </script>
 
 <fieldset tabindex="0">
-    <legend>{t('user.list')}</legend>
+    <legend>
+        {t('user.list')}
+        {#if user.permissions.includes('CREATE_USERS')}
+        <button onclick={() => router.navigate('/user/create')}>{t('user.create_new')}</button>
+        {/if}
+    </legend>
     <table>
         <thead>
             <tr>