[php-src] Issue #8243: Allow to show_source and highlight_file method to highlight a specific line with a different pattern

Issue: https://github.com/php/php-src/issues/8243 Author: arcanisgk ### Description Allow to show_source and highlight_file method to highlight a specific line with a different pattern. then when an error occurs I have my custom methods to capture them with: ```php register_shutdown_function([$this, "shutdownHandler"]); set_exception_handler([$this, "exceptionHandler"]); set_error_handler([$this, "errorHandler"]); ``` at the end knowing I use the path and the file where the error occurred: ```php $error = error_get_last(); $error['file']; // this is the path of the script where the error occurred!!! ``` Managed to display the code with: ```php show_source($error['file']) ```  **but I am interested in highlighting the Line where the error has occurred** I thought that to method how_source or highlight_file, you can pass a second argument with the line or an array of lines to highlight like that: ```php show_source($error['file'],14); ``` OR ```php show_source($error['file'],[1.14]); ```