fix(fullname): added extractFullName() template

[jameszheng405]

fix #2539

Fixes #2539.

Changes proposed in this pull request:

• added extractFullName() template

Note: pull requests without proper descriptions may simply be closed without further discussion. We appreciate your contributions, but need to know what you are offering in clearly described format. Provide tests for all code that you add/modify. If you add/modify any components update the storybook. Thanks! (you can delete this text)

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[CLAassistant]

All committers have signed the CLA.

[morrme]

Hi @jameszheng405 ! Thanks for this contribution.

Have you previously signed our CLA? https://cla-assistant.io/HospitalRun/hospitalrun-frontend?pullRequest=2576

Also, it looks like your commits were not signed by an email tied to your Github account. See more information here: https://docs.github.com/en/github/committing-changes-to-your-project/why-are-my-commits-linked-to-the-wrong-user#commits-are-not-linked-to-any-user

If you need any guidance with sorting these issues out, let us know!

[jameszheng405]

@morrme Can you review this PR again, I believe the tests are now passing