Add DeviceVerificationFlow dummy and verification test button

src/DeviceVerificationFlow.h

@@ -0,0 +1,38 @@
+#pragma once
+
+#include <QObject>
+
+class QTimer;
+
+class DeviceVerificationFlow : public QObject
+{
+        Q_OBJECT
+        // Q_CLASSINFO("RegisterEnumClassesUnscoped", "false")
+
+public:
+        enum Method
+        {
+                Decimal,
+                Emoji
+        };
+        Q_ENUM(Method)
+
+        DeviceVerificationFlow(QObject *parent = nullptr);
+
+public slots:
+        //! accepts a verification and starts the verification flow
+        void acceptVerificationRequest();
+        //! cancels a verification flow
+        void cancelVerification();
+        //! Completes the verification flow
+        void acceptDevice();
+
+signals:
+        void verificationRequestAccepted(Method method);
+        void deviceVerified();
+        void timedout();
+        void verificationCanceled();
+
+private:
+        QTimer *timeout = nullptr;
+};