Add default yaml dumping method

[bruno-f-cruz]

We should add a utility method to dump yamls to file so users don't have to worry about figuring out the encoding settings. This should be solved at the same time as #7

[bruno-f-cruz]

 As an example:

   with open(path, "w", encoding="utf-8") as f:
            f.write(_yaml_dump(manifest_config))
        return path

    def _yaml_dump(model: BaseModel) -> str:
        native_json = json.loads(model.model_dump_json())
        return yaml.dump(native_json, default_flow_style=False)