Added To-Do List project with add, delete, and mark completed features

[vanessanserrano]

Developer Checklist

• [ ✓] Followed guidelines mentioned in the readme file.
• [ ✓] Followed directory structure. (e.g. ProjectName/{USERNAME}/...yourfiles)
• Starred ⭐ the Repo (Optional)

Summary

To Do List that allows a user to add tasks, delete tasks, and mark tasks completed.

Screenshot

Live Project Link

add a working project link here

[NitkarshChourasia]

Good.