Following up on issues #105 (comment), #106 and #90, I'd like to start collecting information on how to (best) do packaging for all platforms PythonTurtle runs on. When we know how to perform packaging manually it will be an easy task to automate it all.

In other words, we need

1. a list of target package types (e.g. MSI for Windows, macOS AppImage, Debian DEB, RPM, Snap), and
2. a complete list of concrete, detailed steps (read: shell commands) of how each package type is built, from source code living in source control only.

NOTE: If writing this up in this issue proves uncomfortable we may want to use the project Wiki to help us move along.