Startup Idea: Cross-Platform Project File Tool

Startup idea to develop a software tool to streamline the game development process. The aim is for the tool to accept Visual Studio solution files and produce project files for platforms such as MS Windows, Linux, MacOS, Android, and iOS automatically, thus reducing the overhead of maintaining separate project files.

I am a video game programmer and I work with Visual Studio everyday. Right now, I am working on a game that would be cross platform with MS Windows, Linux and MacOS, Android and iOS. The issue that I am having is that I have to maintain the project files for each platform separately. It would be helpful if a tool would accept Visual Studio sln files and spit out the project files for each platform. I have looked into tools like CMake, but they have their own overhead and compatibility issues.