Serial Tool v3

Another – much needed – rewrite.

Now installable via pip or pipx, runs on Python 3.11 and is much more maintainable.
There is still a lot to do, but for now, great improvements.

Source code is available on Damogran Labs GitHub account.
Let me know for the bugs and other thoughts.  Buy me an ice cream. Thank you.

Previous release post: https://damogranlabs.com/2019/11/serial-tool-v2/