Setting up a method of citing PyBryt

[chrispyles]

Just found this out recently in the context of someone wanting to cite Otter-Grader: GitHub has added support for CITATION.cff files (link). Should we add something like this for PyBryt?

[leestott]

initial cite created

cff-version: 1.2.0 message: "If you use this software, please cite it as below." authors:

• family-names: "Stott" given-names: "Lee" orcid: "https://orcid.org/0000-0002-3715-0892"
• family-names: "Gilad-Bachrach" given-names: "Ran" orcid: https://orcid.org/0000-0002-4001-8307
• family-names: Pyles given-names: Christopher orcid: "https://orcid.org/0000-0001-8520-7593"
• family-names: "Beg" given-names: "Marijan" orcid: "https://orcid.org/0000-0002-6670-3994"
• family-names: "Levy" given-names: "Nir" orcid: "https://orcid.org/0000-0002-4256-4934"
• family-names: "Gorman" given-names: "Gerard John" orcid: "https://orcid.org/0000-0003-0563-3678"
• family-names: "Percival" given-names: "James Robert" orcid: https://orcid.org/0000-0002-6556-0055 title: "Pybryt - Python library for pedagogical auto-assessment" version: 0.1.9 date-released: 2021-01-25 url: "https://github.com/microsoft/pybryt"