Added Gravity Forms Addon

inc/class-settings.php

@@ -44,6 +44,16 @@ final class Settings {
         return $data;
     }
 
+    private static function set(string $key, $value = null):void {
+        $data = self::get();
+        if (is_null($value) && isset($data[$key])) {
+            unset($data[$key]);
+        } else {
+            $data[$key] = $value;
+        }
+        update_option(Plugin::get_id(), $data);
+    }
+
     private static function is_checked(string $name, string $value):bool {
         return in_array($value, (array) self::get($name));
     }