chore: adding revised cat photo app workshop to frontend cert

[jdwilkin4]

Summary of changes

The only thing I have changed about this project was to remove the form section. Forms have their own module in the frontend cert and there will be a separate project to go into forms in more detail.

Checklist:

• [x] I have read freeCodeCamp's contribution guidelines.
• [x] My pull request has a descriptive title (not a vague title like Update index.md)

Closes #378