NOISSUE WIP implementation of the ability to create instance shortcuts

Currently Linux-only and lacking some features

launcher/ui/dialogs/CreateShortcutDialog.h

@@ -0,0 +1,40 @@
+/*
+ * Copyright 2022 arthomnix
+ *
+ * This source is subject to the Microsoft Public License (MS-PL).
+ * Please see the COPYING.md file for more information.
+ */
+
+#pragma once
+
+#include <QDialog>
+#include "minecraft/auth/MinecraftAccount.h"
+#include "BaseInstance.h"
+
+namespace Ui
+{
+    class CreateShortcutDialog;
+}
+
+class CreateShortcutDialog : public QDialog
+{
+    Q_OBJECT
+
+public:
+    explicit CreateShortcutDialog(QWidget *parent = nullptr, InstancePtr instance = nullptr);
+    ~CreateShortcutDialog() override;
+
+private
+slots:
+    void on_shortcutPathBrowse_clicked();
+    void updateDialogState();
+    void accept() override;
+
+private:
+    Ui::CreateShortcutDialog *ui;
+    InstancePtr m_instance;
+
+    QString getLaunchCommand();
+
+    void createShortcut();
+};