Implement Peer ID Client column for Peers tab

PR #17940.

src/gui/properties/peerlistwidget.h

@@ -66,6 +66,7 @@ public:
         CONNECTION,
         FLAGS,
         CLIENT,
+        PEERID_CLIENT,
         PROGRESS,
         DOWN_SPEED,
         UP_SPEED,
@@ -87,7 +88,7 @@ public:
     void clear();
 
 private slots:
-    void loadSettings();
+    bool loadSettings();
     void saveSettings() const;
     void displayColumnHeaderMenu();
     void showPeerListMenu();