File Converter Pro

### What's new
- **Automation** – Added an Automation tab to the app settings (Watcher & Scheduler). You can now automate conversions by editing the .toml configuration file(s) located in the automation folder next to the executable. For detailed information, see [More about Automation](https://github.com/Hyacinthe-primus/File_Converter_Pro/wiki/How-To-Use#automation)
- **Refactor** – QSS files have been separated from the main codebase to improve code organization and maintainability.
- **New Language** – Thanks to @artlans, Russian language support has been added (#14).
- **Installer improvement** – Added Russian and Italian language support to the installer.
- **Performance** – The app has been optimized to be lighter and faster to download
- **minor fixes and changed**

> **Note:** If you have a previous version of File Converter Pro installed, it is recommended to uninstall it before installing this update.

## What's Changed
* Add docstring to FadingMainWindow.__init__ method by @Lang-Qiu in https://github.com/Hyacinthe-primus/File_Converter_Pro/pull/13
* Add Russian translation by @artlans in https://github.com/Hyacinthe-primus/File_Converter_Pro/pull/14

## Ne