Add Todo List project to Up for Grabs

[BinaryBrain45]

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Description: This PR adds the Todo List project to the "Up for Grabs" website.

Todo List is a simple task management tool built with HTML, CSS, and JavaScript. It's designed to help beginners get started with open-source contributions by working on small, manageable issues.

Project repository: Todo List GitHub Repository Labels for beginners: good first issue I have labeled beginner-friendly issues in the repository with the good first issue tag, and the project is actively maintained.

[shiftbot]

:wave: I'm a robot checking the state of this pull request to save the human reviewers time. I noticed this PR added or modififed the data files under _data/projects/ so I had a look at what's changed.

As you make changes to this pull request, I'll re-run these checks.

_data/projects/todo-list.yml :white_check_mark:

A label named good first issue has been found on GitHub and it currently has 1 issue - this should be ready to merge!