Improve error messages when updater fails a download (#4594)

Co-authored-by: Rasmus Karlsson <rasmus.karlsson@pajlada.com>

src/common/NetworkRequest.cpp

@@ -150,6 +150,24 @@ NetworkRequest NetworkRequest::multiPart(QHttpMultiPart *payload) &&
     return std::move(*this);
 }
 
+NetworkRequest NetworkRequest::followRedirects(bool on) &&
+{
+    if (on)
+    {
+        this->data->request_.setAttribute(
+            QNetworkRequest::RedirectPolicyAttribute,
+            QNetworkRequest::NoLessSafeRedirectPolicy);
+    }
+    else
+    {
+        this->data->request_.setAttribute(
+            QNetworkRequest::RedirectPolicyAttribute,
+            QNetworkRequest::ManualRedirectPolicy);
+    }
+
+    return std::move(*this);
+}
+
 NetworkRequest NetworkRequest::payload(const QByteArray &payload) &&
 {
     this->data->payload_ = payload;

src/common/NetworkRequest.hpp

@@ -61,6 +61,11 @@ public:
     NetworkRequest authorizeTwitchV5(const QString &clientID,
                                      const QString &oauthToken = QString()) &&;
     NetworkRequest multiPart(QHttpMultiPart *payload) &&;
+    /**
+     * This will change `RedirectPolicyAttribute`.
+     * `QNetworkRequest`'s defaults are used by default (Qt 5: no-follow, Qt 6: follow).
+     */
+    NetworkRequest followRedirects(bool on) &&;
 
     void execute();