Tags: tomolt/PicoFET

Mass build script & GitHub Workflow for Release Assets

This is a squashed commit of the following commits:

Added script to build release images for multiple boards

Github Workflow to provide release assets

Fixed bad checkout action option names

Rebuild release assets when release is edited

Typo fix: 'refs' -> 'ref'

Workflow fix: Use absolute file paths

Github Workflow caching, general rewrite

Github Workflow: Some YAML syntax fixes

Github Workflow: Fixed apt package names

Github Workflow: Permission to write contents

Mass build script now puts version number in file names

GHWF: Removed buggy pkg caching; Version No. in file names

GHWF Cache the SDK at the proper fully-specified path