qt: Add copy IP/Netmask action for banned peer

This adds a copy IP/Netmask context menu action for peers in the banned peer table

src/qt/rpcconsole.cpp

@@ -706,6 +706,13 @@ void RPCConsole::setClientModel(ClientModel *model, int bestblock_height, int64_
 
         // create ban table context menu
         banTableContextMenu = new QMenu(this);
+        /*: Context menu action to copy the IP/Netmask of a banned peer.
+            IP/Netmask is the combination of a peer's IP address and its Netmask.
+            For IP address see: https://en.wikipedia.org/wiki/IP_address */
+        banTableContextMenu->addAction(tr("&Copy IP/Netmask"), [this] {
+            GUIUtil::copyEntryData(ui->banlistWidget, BanTableModel::Address, Qt::DisplayRole);
+        });
+        banTableContextMenu->addSeparator();
         banTableContextMenu->addAction(tr("&Unban"), this, &RPCConsole::unbanSelectedNode);
         connect(ui->banlistWidget, &QTableView::customContextMenuRequested, this, &RPCConsole::showBanTableContextMenu);