[php-src] PR #24135: Zend: add new zend_object_init{_with_constructor}() API

Pull Request: https://github.com/php/php-src/pull/24135 Author: Girgias Commits should be reviewed individually. The motivation is that creating an object shouldn't require providing a zval backing storage, as often one only cares about the zend_object*. The common case where we *do* have a backing storage is within userland functions where return_value is passed, this is IMHO suboptimal as it leaks an implementation detail that is usually hidden by the use of the RETURN/RETVAL macros, moreover it can make determining what the return value of userland function *is* confusing if return_value is initialized and a plain return statement is used to return early. The commits follow the rough idea: - Minor preparatory refactorings - Introduction of new API - Partial migration to the new API Obviously not all cases have been migrated, sometimes it makes more sense to use the existing object_init_ex API, or moving to the new API is desirable but various other refactorings need to be made at an extension level for it to make sense. Some future refactoring I am thinking of doing with the new APIs are: - reflection - intl - SPL