setup electron app with boilerplate

cpp/src/dialogs/memberpickerdialog.h

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+#ifndef MEMBERPICKERDIALOG_H
+#define MEMBERPICKERDIALOG_H
+
+#include "../models.h"
+#include <QDialog>
+
+QT_BEGIN_NAMESPACE
+class QListWidget;
+QT_END_NAMESPACE
+
+/// A simple dialog that shows a checklist of humans and returns the selected emails.
+class MemberPickerDialog : public QDialog
+{
+  Q_OBJECT
+
+public:
+  explicit MemberPickerDialog(const QString &title, QWidget *parent = nullptr);
+
+  /// Populate the checklist. Members whose emails appear in `exclude` are hidden.
+  void setMembers(const std::vector<Human> &members, const std::vector<QString> &exclude = {});
+
+  /// Returns the emails of all checked items.
+  QStringList selectedEmails() const;
+
+private:
+  QListWidget *m_list;
+};
+
+#endif // MEMBERPICKERDIALOG_H