feat+refactor: clean up ProgressWidget and add progress indicatior to

mod downloader

Signed-off-by: flow <flowlnlnln@gmail.com>

launcher/ui/pages/modplatform/ModPage.h

@@ -8,6 +8,7 @@
 #include "ui/pages/BasePage.h"
 #include "ui/pages/modplatform/ModModel.h"
 #include "ui/widgets/ModFilterWidget.h"
+#include "ui/widgets/ProgressWidget.h"
 
 class ModDownloadDialog;
 
@@ -75,6 +76,8 @@ class ModPage : public QWidget, public BasePage {
     ModFilterWidget filter_widget;
     std::shared_ptr<ModFilterWidget::Filter> m_filter;
 
+    ProgressWidget m_fetch_progress;
+
     ModPlatform::ListModel* listModel = nullptr;
     ModPlatform::IndexedPack current;