Track JIT successes and failures for opcache_get_status

[iluuu1994]

There have been quite a few JIT benchmarks lately. It would be interesting to know how many functions actually make use of the JIT in large repositories. This PR track successes and failures and returns them in opcache_get_status. Naming is a little verbose, let me know if that's ok. Also, it would obviously be more useful if we knew which functions failed compiling but that would probably be too expensive. This PR might be too simplistic, let me know if there's something I didn't handle properly.

/ping @dstogov

[iluuu1994]

Nevermind, ran it through a project with all of the vendors, this is the result.

["function_compilation_successes"]=>
int(53779)
["function_compilation_failures"]=>
int(0)

In other words, not a single failure 👍

[dstogov]

Keeping number of compiled/aborted functions per process doesn't make a lot of sense.
These information should be kept in shared memory and updated under lock.

Independently, it makes sense to add logging about function compilation failures, controlled by opcache.jit_debug flag (similar to traces).

[dstogov]

This is not specific to tracing JIT. It would be better to move this assignments to zend_jit.c

[dstogov]

jit_globals structure is not shared across processes, so each process is going to keep (and show) only it's own number of compiled and failed functions.

[iluuu1994]

Thanks Dmitry, then I will pick this back up when I'm done with my other tasks for PHP 8.0.