Added a CITATION.cff

[jamesbraza]

Here is the BibTeX:

@article{Narayanan_Aviary_training_language_2024,
    author = {Narayanan, Siddharth and Braza, James D. and Griffiths, Ryan-Rhys and Ponnapati, Manvitha and Bou, Albert and Laurent, Jon and Kabeli, Ori and Wellawatte, Geemi and Cox, Sam and Rodriques, Samuel G. and White, Andrew D.},
    doi = {10.48550/arXiv.2412.21154},
    journal = {preprint},
    month = dec,
    title = {{Aviary: training language agents on challenging scientific tasks}},
    url = {https://arxiv.org/abs/2412.21154},
    year = {2024}
}