chore: add css colors lab project to frontend cert

[jdwilkin4]

The CSS Colors module will have a few labs for campers to do.
Labs are defined as short projects campers build on their own. It will consist of a blank editor and user stories.
Here is an example for the format:
https://www.freecodecamp.org/learn/the-odin-project/top-build-a-recipe-project/top-build-a-recipe-project

The previous workshop will have been the colored markers project here
https://www.freecodecamp.org/learn/2022/responsive-web-design/learn-css-colors-by-building-a-set-of-colored-markers/step-94

So we need a lab that covers some of those topics in that workshop.
The workshop covers hsl, rgb, hex codes and named colors.
This lab doesn't need to use all of those different color models.
Just pick one to have campers work with here.

length of project

Even though we will have user stories for both HTML and CSS in this project, it should still be a smaller project then the colored markers.
So maybe 10-15 user stories?

note about the HTML boilerplate

At this point in the cert, campers will have created a few labs and worked on a few workshops.
So we no longer need to force them to write out the HTML boilerplate each time.
So we don't need to create user stories for the HTML boilerplate anymore.

Note about adding new images

For adding new images, make sure they are free to use. You will also need to be add that image to our CDN repo here
https://github.com/freeCodeCamp/cdn

Once the new image has been added to the CDN repo, then you will need to reference that cdn link in your project.

If you are not sure about if an image can be used, reach out on staff chat.

Acceptance criteria

• create a new folder of the project in the frontend-cert/css-projects directory
• add your completed project in an index.html file and styles.css file in that new folder
• create a markdown file for your proposed user stories. You should call it user-stories.md and place it in your new project folder