Rework curseforge download (#611)

* Use the bulk endpoint on mod resolution for faster download
* Search on modrinth for api blocked mods
* Display a dialog for manually downloading blocked mods

launcher/ui/dialogs/ScrollMessageBox.h

@@ -0,0 +1,20 @@
+#pragma once
+
+#include <QDialog>
+
+
+QT_BEGIN_NAMESPACE
+namespace Ui { class ScrollMessageBox; }
+QT_END_NAMESPACE
+
+class ScrollMessageBox : public QDialog {
+Q_OBJECT
+
+public:
+    ScrollMessageBox(QWidget *parent, const QString &title, const QString &text, const QString &body);
+
+    ~ScrollMessageBox() override;
+
+private:
+    Ui::ScrollMessageBox *ui;
+};