The first header was used to include the SpiderMonkey JS API at once,
with safeguards and preprocessor defines. Nowadays, SpiderMonkey
provides modular headers allowing us to include what we use, refs #8086.
Some defines have to be moved to compiler options but it is apparently
a mistake from the SM developers:
https://bugzilla.mozilla.org/show_bug.cgi?id=1987876
Add a workflow for linting and add a cppcheck job.
The job is using cppcheck provided by package manager. Existing errors
are suppressed to get going with CI linting, ideally tho the suppression
list would be empty. Some of the suppressed errors are only found with
more recent cppcheck than what is available in the runner.
Also remove old arclint cppcheck setup.
Signed-off-by: Ralph Sennhauser <ralph.sennhauser@gmail.com>