setup electron app with boilerplate

cpp/src/widgets/textparticlewidget.h

@@ -0,0 +1,22 @@
+#ifndef TEXTPARTICLEWIDGET_H
+#define TEXTPARTICLEWIDGET_H
+
+#include <QWidget>
+
+class QLabel;
+struct Particle;
+
+class TextParticleWidget : public QWidget
+{
+  Q_OBJECT
+public:
+  explicit TextParticleWidget(QWidget *parent = nullptr);
+
+  void setParticle(const Particle *particle);
+  void clear();
+
+private:
+  QLabel *m_label;
+};
+
+#endif // TEXTPARTICLEWIDGET_H