Question regarding netcore 6 support

[KristiforMilchev]

Hello twinearthsoftware, i use your repository for one of my open source projects and honestly it works great under Windows, however we had a requirement to port the project to Mac and Linux and i had to re write some of the StechUploader code to be comparable with .net 6 and System.IO.Ports since the RJC doesn't play nice with anything but Windows.

I still have few things to fix before its fully ready, mainly refactor some of my code and turn on the command line tool, since i just commented it out as i don't use it.

So question is, should i open PR or just keep it on a different fork?