* Add action to check board headers when modified
* Fix invalid escape warning
* Check for more board header errors before exiting script
* Also run when action file changes
* Add back newline at end of check_all_board_headers.sh
* Remove python install step
* `e.__str__()` -> `str(e)`
* Add action to check configs & defines
* Check for all errors before exiting scripts
* Add extract_cmake_functions to the checks
* Fix invalid escape sequence warning
* Slight tweak to the config-extraction scripts.
A small logic bug meant they were reporting more false-positive warnings than they should have been.
* Small code tidy-up
- Re-synchronise the PICO_CMAKE_CONFIG: entries with the corresponding PICO_CONFIG: entries
- Fix a silly typo I made in #2002
- Enhance config-extraction scripts to catch similar typos in future
* Update config-extraction scripts to work with multiple chips
* Standardise wording between common options
* Various config-related fixes
* Update pico_rand to use correct busctrl_hw struct-name
* Don't start config descriptions with "The ..."
Always write the path as "abosolute" (relative to the root of pico-sdk) as that makes searching for it (when building the RP2040 datasheet) much faster. This matches the behaviour of extract_build_defines.py and extract_cmake_configs.py
