qt: Add PeerTableModel::StatsRole

This change allows access to CNodeCombinedStats instance directly from
any view object.

src/qt/peertablemodel.cpp

@@ -181,6 +181,11 @@ QVariant PeerTableModel::data(const QModelIndex &index, int role) const
             default:
                 return QVariant();
         }
+    } else if (role == StatsRole) {
+        switch (index.column()) {
+        case NetNodeId: return QVariant::fromValue(rec);
+        default: return QVariant();
+        }
     }
 
     return QVariant();

src/qt/peertablemodel.h

@@ -28,6 +28,7 @@ struct CNodeCombinedStats {
     CNodeStateStats nodeStateStats;
     bool fNodeStateStatsAvailable;
 };
+Q_DECLARE_METATYPE(CNodeCombinedStats*)
 
 class NodeLessThan
 {
@@ -67,6 +68,10 @@ public:
         Subversion = 6
     };
 
+    enum {
+        StatsRole = Qt::UserRole,
+    };
+
     /** @name Methods overridden from QAbstractTableModel
         @{*/
     int rowCount(const QModelIndex &parent) const override;