feat: adds Brooklyn's user stories (#200)

* feat: created a branch and a folder containing the user_stories markdown

* docs: finished writing the user stories in the .md

Author: brooklynharden

lesson_05/brooklynharden/USER_STORIES.md

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+## README.md User Stories For Tiktok
+
+
+## Repose Videos Easily
+1. As a Social Media User, I want to be able to repost content that I find relatable. So that my friends and followers can see it without me needing to send it to each person individually.
+
+## Add Visuals to Comments
+2. As a Social Media User, I want to be able to add GIFs, memes, and images in the comment section rather than just plain text.
+So, that I can better express myself when words aren't enough.
+
+## Organize Favorite Videos
+3. As a Social Media User, I want to be able to favorite videos and sort them into folders. So, that I can easily rewatch or return to them later