- added automatic downloading if you already clicked "download" button
so e.g. you don't need to press "download" button two times to download the game
and then download its voiceover
- reduced amount of action calls
- added "WIP" tooltips for progress pause buttons
- added `add_action` function to add actions to widgets
- added `MainApp::toast_error` method to show toast with some error
- added `lib::game` mod with `run` function to run the game
- added `lib::consts` mod with constant values like config file path
- added `lib::config` mod to control config file
- added warning subtitle to `Proton-GE` wine version selector
