[Term Entry]: Add Think Aloud Protocol

[AnamolR]

Description

This PR adds a new UX research entry titled Think Aloud Protocol to the uiux/concepts section.

New folder: content/uiux/concepts/think-aloud-protocol/
New image: media/think-aloud-protocol.png
Markdown file: think-aloud-protocol.md includes a definition of the method, when to use it, an example scenario, best practices, and known limitations.

This entry follows the established tone, structure, and formatting conventions of existing UI/UX research topics.

Issues Solved

Closes #6589

Type of Change

Adding a new entry

Checklist

• All writings are my own.
• My entry follows the Codecademy Docs style guide.
• My changes generate no new warnings.
• I have performed a self-review of my own writing and code.
• I have checked my entry and corrected any misspellings.
• I have made corresponding changes to the documentation if needed.
• I have confirmed my changes are not being pushed from my forked main branch.
• I have confirmed that I'm pushing from a new branch named after the changes I'm making.
• I have linked any issues that are relevant to this PR in the Issues Solved section.

[dakshdeepHERE]

LGTM :)

[Sriparno08]

The entry looks good to be merged, @AnamolR!

[github-actions]

👋 @AnamolR
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