Better version handling

Signed-off-by: Trial97 <alexandru.tripon97@gmail.com>

launcher/ui/pages/modplatform/ResourceModel.h

@@ -80,6 +80,9 @@ class ResourceModel : public QAbstractListModel {
     /** Gets the icon at the URL for the given index. If it's not fetched yet, fetch it and update when fisinhed. */
     std::optional<QIcon> getIcon(QModelIndex&, const QUrl&);
 
+    void addPack(ModPlatform::IndexedPack& add) { m_selected.append(add); }
+    void removePack(QString& rem);
+
    protected:
     /** Resets the model's data. */
     void clearData();
@@ -124,6 +127,7 @@ class ResourceModel : public QAbstractListModel {
     QSet<QUrl> m_failed_icon_actions;
 
     QList<ModPlatform::IndexedPack> m_packs;
+    QList<ModPlatform::IndexedPack> m_selected;
 
     // HACK: We need this to prevent callbacks from calling the model after it has already been deleted.
     // This leaks a tiny bit of memory per time the user has opened a resource dialog. How to make this better?