NOISSUE Support custom,latest,recommended loader versions for ATL

This provides support for modpacks using the new loader mechanism in
ATLauncher and using a non-specific version target.

application/pages/modplatform/atlauncher/AtlPage.h

@@ -19,6 +19,7 @@
 #include "AtlListModel.h"
 
 #include <QWidget>
+#include <modplatform/atlauncher/ATLPackInstallTask.h>
 
 #include "MultiMC.h"
 #include "pages/BasePage.h"
@@ -31,7 +32,7 @@ namespace Ui
 
 class NewInstanceDialog;
 
-class AtlPage : public QWidget, public BasePage
+class AtlPage : public QWidget, public BasePage, public ATLauncher::UserInteractionSupport
 {
 Q_OBJECT
 
@@ -61,6 +62,8 @@ public:
 private:
     void suggestCurrent();
 
+    QString chooseVersion(Meta::VersionListPtr vlist, QString minecraftVersion) override;
+
 private slots:
     void triggerSearch();
     void resetSearch();