start on view the show single record as list of label + value

pglab/widgets/SingleRecordModel.h

@@ -0,0 +1,39 @@
+#pragma once
+
+#include <QAbstractTableModel>
+#include "Pgsql_oids.h"
+
+class SingleRecordModel : public QAbstractTableModel
+{
+    Q_OBJECT
+
+public:
+    explicit SingleRecordModel(QObject *parent = nullptr);
+
+    // Header:
+    QVariant headerData(int section, Qt::Orientation orientation, int role = Qt::DisplayRole) const override;
+
+    // Basic functionality:
+    int rowCount(const QModelIndex &parent = QModelIndex()) const override;
+    int columnCount(const QModelIndex &parent = QModelIndex()) const override;
+
+    QVariant data(const QModelIndex &index, int role = Qt::DisplayRole) const override;
+
+private:
+    enum Columns {
+        NameCol,
+        ValueCol,
+
+        ColCount
+    };
+
+    class Elem {
+    public:
+        QString name;
+        QString value;
+        Oid oid;
+    };
+    using Elems = std::vector<Elem>;
+    Elems elems;
+};
+