Move leds to custom led class

Qt/led.h

@@ -0,0 +1,18 @@
+#ifndef LED_H
+#define LED_H
+
+#include "QPushButton"
+
+class Led : public QPushButton {
+    Q_OBJECT
+  public:
+    explicit Led(QWidget *parent = nullptr);
+    explicit Led(const QString &text, QWidget *parent = nullptr);
+    Led(const QIcon& icon, const QString &text, QWidget *parent = nullptr);
+    ~Led();
+  private:
+    bool is_read_only(QWidget* widget);
+    void set_read_only(QWidget* widget, bool read_only);
+};
+
+#endif // LED_H