Documented open_basedir limitation and logging if boostrapper path doesn't comply that limitation

[intuibase]

It will produce output like this for default log level.

[Elastic APM PHP Tracer] 2023-08-23 14:38:12.223397+02:00 [PID: 268995] [TID: 268995] [WARNING]  [Lifecycle] [lifecycle.cpp:558] [elasticApmModuleInit] Elastic Agent bootstrap file (/home/paplo/sources/apm-agent-php/agent/php/bootstrap_php_part.php) is located outside of paths allowed by open_basedir ini setting. Read more details here https://www.elastic.co/guide/en/apm/agent/php/current/setup.html
PHP Warning:  PHP Request Startup: open_basedir restriction in effect. File(/home/paplo/sources/apm-agent-php/agent/php/bootstrap_php_part.php) is not within the allowed path(s): (/var/www/html/dupa) in Unknown on line 0
[Elastic APM PHP Tracer] 2023-08-23 14:38:12.226372+02:00 [PID: 268995] [TID: 268995] [ERROR]    [Util] [util_for_PHP.cpp:94] [loadPhpFile] php_stream_open_for_zend_ex() failed. Return value: -1. phpFilePath: `/home/paplo/sources/apm-agent-php/agent/php/bootstrap_php_part.php'
[Elastic APM PHP Tracer] 2023-08-23 14:38:12.226396+02:00 [PID: 268995] [TID: 268995] [ERROR]    [Util] [util_for_PHP.cpp:44] [logDiagnostics_for_failed_php_stream_open_for_zend_ex] Diagnostics for failed php_stream_open_for_zend_ex(): fopen("/home/paplo/sources/apm-agent-php/agent/php/bootstrap_php_part.php", "r") returned non-NULL value
[Elastic APM PHP Tracer] 2023-08-23 14:38:12.226409+02:00 [PID: 268995] [TID: 268995] [ERROR]    [Util] [util_for_PHP.cpp:171] [loadPhpFile] Exiting...; resultCode: resultFailure (6); 
[Elastic APM PHP Tracer] 2023-08-23 14:38:12.226415+02:00 [PID: 268995] [TID: 268995] [ERROR]    [C-to-PHP] [tracer_PHP_part.cpp:90] [switchTracerPhpPartStateToFailed] Switching tracer PHP part state to failed; reason: Failed to bootstrap tracer PHP part, current state: tracerPhpPartState_before_bootstrap, called from bootstrapTracerPhpPart
[Elastic APM PHP Tracer] 2023-08-23 14:38:12.226425+02:00 [PID: 268995] [TID: 268995] [ERROR]    [C-to-PHP] [tracer_PHP_part.cpp:155] [bootstrapTracerPhpPart] Exiting...; resultCode: resultFailure (6); 
[Elastic APM PHP Tracer] 2023-08-23 14:38:12.226431+02:00 [PID: 268995] [TID: 268995] [ERROR]    [Lifecycle] [lifecycle.cpp:758] [elasticApmRequestInit] Exiting...; resultCode: resultFailure (6); 
...
[Elastic APM PHP Tracer] 2023-08-23 14:38:12.226747+02:00 [PID: 268995] [TID: 268995] [ERROR]    [C-to-PHP] [tracer_PHP_part.cpp:184] [shutdownTracerPhpPart] Exiting...; resultCode: resultFailure (6);