First draft Rewrite get all key with rnp

plugins/Pass/jobs/getkeysjob.h

@@ -0,0 +1,38 @@
+#ifndef GETKEYSJOB_H
+#define GETKEYSJOB_H
+
+#include <QJsonDocument>
+
+
+#include "rnpjob.h"
+
+/**
+ * @class GetKeysJob
+ * @brief A class to handle get all gpg keys from rings in a separate thread.
+ *
+ */
+class GetKeysJob : public RnpJob
+{
+    Q_OBJECT
+
+    /**
+     * @brief The main function that performs the get all keys operation.
+     *
+     * Handles the process of removing recursively a target path.
+     */
+    void run() override;
+
+signals:
+    void resultError(const rnp_result_t err);
+    void resultSuccess(const QSet<QString> result);
+
+public:
+    /**
+     * @brief Constructor for the GetKeysJob class.
+     *
+     * @param rnp_homedir Rnp home dir that contains the keyrings.
+     */
+    GetKeysJob(QDir rnp_homedir);
+};
+
+#endif // GETKEYSJOB_H