下载页面雏形，修复SpkPopup（改用弹出），添加应用列表固定图标缓存

inc/spkdownloadentry.h

@@ -0,0 +1,52 @@
+
+#pragma once
+
+#include <QWidget>
+#include <QPushButton>
+#include <QLabel>
+#include "qt/elidedlabel.h"
+#include "spkloading.h"
+#include <QProgressBar>
+#include <QHBoxLayout>
+#include <QVBoxLayout>
+
+class SpkDownloadEntry : public QWidget
+{
+    Q_OBJECT
+
+  public:
+    explicit SpkDownloadEntry(QWidget* parent = nullptr);
+    ~SpkDownloadEntry();
+
+    static constexpr QSize IconSize { 64, 64 };
+
+    enum DownloadEntryStatus
+    {
+      Invalid = -1,
+      Waiting,
+      Downloading,
+      Paused,
+      Failed,
+      ToBeInstalled,
+      Installing,
+      Installed,
+      InstallFailed
+    };
+
+  public slots:
+    void SetBasicInfo(QString name, QPixmap icon);
+    void SetStatus(DownloadEntryStatus status);
+    void SetProgress(int);
+
+  private:
+    QLabel *mIcon, *mMessage;
+    ElidedLabel *mAppName;
+    QProgressBar *mProgress;
+    QPushButton *mBtnDelete,
+                *mBtnActions; // Actions include Retry Pause Install etc, one status at a time
+    SpkLoading *mLoading;
+
+    QHBoxLayout *mLayMsgs, *mLayMain;
+    QVBoxLayout *mLayInfo;
+
+};