feat: add news reader dialog

Makes it easier to read about new blog posts! Yay :D

launcher/ui/dialogs/NewsDialog.h

@@ -0,0 +1,30 @@
+#pragma once
+
+#include <QDialog>
+#include <QHash>
+
+#include "news/NewsEntry.h"
+
+namespace Ui {
+class NewsDialog;
+}
+
+class NewsDialog : public QDialog {
+    Q_OBJECT
+
+   public:
+    NewsDialog(QList<NewsEntryPtr> entries, QWidget* parent = nullptr);
+    ~NewsDialog();
+
+   public slots:
+    void toggleArticleList();
+
+   private slots:
+    void selectedArticleChanged(const QString& new_title);
+
+   private:
+    Ui::NewsDialog* ui;
+
+    QHash<QString, NewsEntryPtr> m_entries;
+    bool m_article_list_hidden = false;
+};