Feature: Add gif of the terminal showing the user add themselves using the CLI

[BekahHW]

Type of feature

🍕 Feature

Current behavior

We only have written directions.

Suggested solution

1. Record a gif of the terminal as you go through the commands to add yourself to the guestbook using the CLI shared in chapter 5.
2. Add the gif to assets/images with the name cli-tool.gif
3. On line 161 in chapter 5, add the gif below this text:

   **CLI Tool**

   - Run `npm run contributors:add` in your terminal.

     Follow the instructions to add yourself to the guestbook. After you finish and click enter, you must click enter again to confirm your choices.

Additional context

No response

Code of Conduct

• I agree to follow this project's Code of Conduct

Contributing Docs

• I agree to follow this project's Contribution Docs

[Vivine Assokane]

.take