Updated the existing C# code into a more modern, imperative and top-level statements style. This involves shortening the code by removing unnecessary parts like additional brackets and explicit namespace declarations. It's done to improve clarity and readability.
Global System and System.IO usages have been replaced with global usings in GlobalUsings.cs for improved code readability. Alongside, a FreeSpacePreCheck has been added in FreeSpacePreCheck.cs to ensure enough drive space is available before installation. This check was initially taking place in InitializationTask.cs which has been removed for better separation of concerns. The PreCheckViewModel visibility is now dependent on the success status of PreChecks, enhancing user experience.
