feat: add multi author option to tutorials

[itsacoyote]

What :computer:

• Allow for more than one author to be a part of a tutorial

Why :hand:

• We can attribute to more than one author for a tutorial

Evidence :camera:

[github-actions[bot]]

Visit the preview URL for this PR (updated for commit 85b4ad1):

https://community-cookbook-staging--pr2-multi-authors-kco0i036.web.app

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