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/net/Upload.h

@@ -0,0 +1,31 @@
+#pragma once
+
+#include "NetAction.h"
+#include "Sink.h"
+
+namespace Net {
+
+    class Upload : public NetAction {
+        Q_OBJECT
+
+    public:
+        static Upload::Ptr makeByteArray(QUrl url, QByteArray *output, QByteArray m_post_data);
+
+    protected slots:
+        void downloadProgress(qint64 bytesReceived, qint64 bytesTotal) override;
+        void downloadError(QNetworkReply::NetworkError error) override;
+        void sslErrors(const QList<QSslError> & errors);
+        void downloadFinished() override;
+        void downloadReadyRead() override;
+
+    public slots:
+        void executeTask() override;
+    private:
+        std::unique_ptr<Sink> m_sink;
+        QByteArray m_post_data;
+
+        bool handleRedirect();
+    };
+
+} // Net
+