[Concept Entry] C++ Unordered set unordered_set #5315

[Jack-Race]

Description

Created a first draft for a concept entry of C++ Unordered sets. Used the beginner guidelines to create the entry, included introduction, syntax, example and a codebyte example. Found this issue while completing the git & github codecademy course. Let me know how I can improve it. I used the 'sets' concepts page to help me and keep it uniform between ordered and unordered sets, I did change all the descriptions but let me know if they're too similar. All the best!

Issue Solved

Type of Change

• Adding a new entry

Checklist

• [X] All writings are my own.
• [X] My entry follows the Codecademy Docs style guide.
• [X] My changes generate no new warnings.
• [X] I have performed a self-review of my own writing and code.
• [X] I have checked my entry and corrected any misspellings.
• [X] I have confirmed my changes are not being pushed from my forked main branch.