pyyaml.org/libyaml

[and-ri]

closed #249

[what-the-diff]

PR Summary

• Added a new file fixture.c
  A new file called fixture.c has been added to the project. This file may include important functions or data essential for the project's functionality.

• Added package.yml to the project directory libyaml/
  The package.yml file has been added to the libyaml/ directory. This file contains package metadata and configuration information, which can help improve the project's overall management and organization.