feat(RD): add shader pack downloader

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

launcher/ui/dialogs/ResourceDownloadDialog.h

@@ -36,6 +36,7 @@ class QDialogButtonBox;
 class ResourceDownloadTask;
 class ResourceFolderModel;
 class ResourcePackFolderModel;
+class ShaderPackFolderModel;
 
 namespace ResourceDownload {
 
@@ -128,4 +129,23 @@ class ResourcePackDownloadDialog final : public ResourceDownloadDialog {
     BaseInstance* m_instance;
 };
 
+class ShaderPackDownloadDialog final : public ResourceDownloadDialog {
+    Q_OBJECT
+
+   public:
+    explicit ShaderPackDownloadDialog(QWidget* parent,
+                                      const std::shared_ptr<ShaderPackFolderModel>& shader_packs,
+                                      BaseInstance* instance);
+    ~ShaderPackDownloadDialog() override = default;
+
+    //: String that gets appended to the shader pack download dialog title ("Download " + resourcesString())
+    [[nodiscard]] QString resourcesString() const override { return tr("shader packs"); }
+    [[nodiscard]] QString geometrySaveKey() const override { return "ShaderDownloadGeometry"; }
+
+    QList<BasePage*> getPages() override;
+
+   private:
+    BaseInstance* m_instance;
+};
+
 }  // namespace ResourceDownload