Intended to catch problems where new features don't build
in old ESP-IDF.
Includes major refactor to the GitHub Actions Workflow for
esp32 port, including making a reusable workflow for both
Code Size and ESP32 build jobs.
This work was funded through GitHub Sponsors.
Signed-off-by: Angus Gratton <angus@redyak.com.au>
Angus Gratton