Squashes these original commits for release/v5.4 backport traceability:
- 9b289dc5ad6 ci: apply idf-ci 1.x
- 381df980d57 ci: remove pip-cache and other unused jobs
- 32375a0a15e ci: apply common-scripts CI refactor
* Users can now use libbsd string.h and sys/cdefs.h functionality
(e.g., strlcpy, containerof) on Linux by just including
string.h or sys/cdefs.h. In other words, the includes are the same
on the Linux target as well as on chips targets (ESP32, etc.).
* libbsd linking is done by the linux component (belongs to common
components) now instead of handling it separately in each component
Some files that should have their copyrights checked are still placed on the
copyright ignore list.
- These entries have been tidied up
- Copyrights of those files have been updated.
linux/lwip: Wrap some IO posix functions
* to workaourd the FreeRTOS EINTR issue (when building without lwip)
* to correctly choose the sub-system based on fd (when building with
lwip) -- passing control to either linux/system or to lwip
This commit also addapts tapio-if to provide DHCP client by default and
configurable settings for static IP
