setup electron app with boilerplate

cpp/src/dialogs/textinputdialog.cpp

@@ -0,0 +1,30 @@
+#include "textinputdialog.h"
+#include <QLineEdit>
+#include <QPushButton>
+#include <QVBoxLayout>
+
+TextInputDialog::TextInputDialog(QWidget *parent)
+    : QDialog(parent), m_lineEdit(new QLineEdit(this)), m_sendButton(new QPushButton("Send", this))
+{
+  setWindowTitle("Send Text Message");
+
+  auto *layout = new QVBoxLayout(this);
+  layout->addWidget(m_lineEdit);
+  layout->addWidget(m_sendButton);
+
+  connect(m_lineEdit, &QLineEdit::returnPressed, this, &TextInputDialog::onSubmit);
+  connect(m_sendButton, &QPushButton::clicked, this, &TextInputDialog::onSubmit);
+}
+
+void TextInputDialog::onSubmit()
+{
+  QString text = m_lineEdit->text().trimmed();
+  if (text.isEmpty())
+  {
+    return;
+  }
+
+  emit textSubmitted(text);
+  m_lineEdit->clear();
+  hide();
+}