feat: Adding new activity configuration

Signed-off-by: Samuelson Brito <samuelsonma@gmail.com>

Author: samuelsonbrito

appinfo/info.xml

@@ -72,6 +72,7 @@ Developed with ❤️ by [LibreCode](https://librecode.coop). Help us transform
     <activity>
         <settings>
             <setting>OCA\Libresign\Activity\Settings\FileToSign</setting>
+            <setting>OCA\Libresign\Activity\Settings\FileSigned</setting>
         </settings>
         <filters>
             <filter>OCA\Libresign\Activity\Filter</filter>

lib/Activity/Settings/FileSigned.php

@@ -0,0 +1,42 @@
+<?php
+
+declare(strict_types=1);
+/**
+ * SPDX-FileCopyrightText: 2025 LibreCode coop and contributors
+ * SPDX-License-Identifier: AGPL-3.0-or-later
+ */
+
+namespace OCA\Libresign\Activity\Settings;
+
+use OCP\IL10N;
+
+class FileSigned extends LibresignActivitySettings {
+	public function __construct(
+		protected IL10N $l,
+	) {
+	}
+
+	/**
+	 * @return string Lowercase a-z and underscore only identifier. The type of table activity
+	 * @since 20.0.0
+	 */
+	public function getIdentifier(): string {
+		return 'file_signed';
+	}
+
+	/**
+	 * @return string A translated string
+	 * @since 11.0.0
+	 */
+	public function getName(): string {
+		return $this->l->t('A document has been <strong>signed</strong>');
+	}
+
+    /**
+	 * {@inheritdoc}
+	 */
+	public function getPriority(): int {
+		return 52;
+	}
+
+}