NOISSUE Implemented copy screenshots to the clipboard

- Added context-menu entry
- Ctrl+C keybind works as well
- If multiple screenshots are selected, only the first one gets copied

launcher/ui/pages/instance/ScreenshotsPage.h

@@ -73,6 +73,7 @@ protected:
 
 private slots:
     void on_actionUpload_triggered();
+    void on_actionCopy_triggered();
     void on_actionDelete_triggered();
     void on_actionRename_triggered();
     void on_actionView_Folder_triggered();