feat: adds lesson_5 User stories for Tommy (#201)

Author: txtran224

lesson_05/tommytran/lesson_05.md

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+# Lesson_05: User Stories
+
+##  User Story 1:
+    As a Youtuber, I want to schedule my posts in advance so that I can maintain a consistent publishing schedule without having to manually post every day.
+
+### Acceptance Criteria:
+   1. The user can select a date and time for the post to be published.
+   1. The user can edit or delete scheduled posts before the scheduled time.
+   1. The user can view scheduled posts in a calendar or timeline format for easy tracking.
+
+##  User Story 2:
+    As a Youtuber, I want to organize my media files (images, videos, graphics) into folders so that I can quickly find and reuse assets for future projects.   
+
+### Acceptance Criteria:
+   1. The system allows bulk uploads and sorting of files within folders.
+   1. The user can search for media files by name or file type.
+   1. The media files should retain their original quality when uploaded or downloaded.
+
+##  User Story 3:
+    As a YouTuber, I want to receive notifications when someone comments on my video so that I can engage with my audience quickly.
+
+### Acceptance Criteria:
+   1. The user is notified when a new comment or feedback is added.
+   1. The notification includes the comment text and the video it was posted on.
+   1. The user can toggle notifications on or off for specific videos or all videos.