* Don't create path when preparing overlay download, it fails on updates.
* Concatenate the overlay install path in InstallDialog instead of passing it as `base_path`
* Respect RareGame state in in the EOS overlay form
While not sure if it is required, add an expiration date to the prepared
download 30 minutes after it was prepared. If a download has been in the
queue for more than 30 minutes, the download will be prepared again silently
before starting.
Return only the `InstallOptionsModel` in the result of the download thread
to avoid the potential mistake of re-using it. This required for the tray
notification signal to operate on the `app_name` instead of the `app_title`.
As a result, the notification slot was moved into the TrayIcon class for
better encapsulation.
By preparing the download inside the widget, the delay after stopping
the running download and visual feedback of adding the widget is
reduced. The widget will now appear containing the basic information
and will be populated with the information about the download
when it is ready. The widget is disabled in the meantime.
Move `InstallInfoWorker` to `rare.shared.workers` module and
revert it to emitting a `InstallDownloadItem` model only
instead of a `InstallQueueItemModel.`
