Major rewrite of pico_setup.sh#20

Open

michaelstoops wants to merge 6 commits intoraspberrypi:masterfrom

michaelstoops:master

Commits on Apr 2, 2021

Major rewrite. Added support for macOS, Debian, Ubuntu. Added test/validation script.
Michael Stoops
committed
Bug fixes.
Michael Stoops
committed
Adding file missed in previous commit
Michael Stoops
committed
Bug fixes and improved compatibility.
Michael Stoops
committed

Commits on Apr 7, 2021

Numerous changes coming from code review
Michael Stoops
committed

Commits on Apr 13, 2021

Redesigned the tests
Michael Stoops
committed