Rename the rest of the Code UI components to start with `Code` in their class name

[jbriones1]

Motivation behind the feature and what it will do

All new CSSS Code library components follow this, but some of the old ones do not. This will just make everything match in terms of naming convention

Which part of the application will this feature be for?

The component library

Minimal Viable Product

• Rename ArticleComponent to CodeArticleComponent
• Rename ButtonComponent to CodeButtonComponent

Code changes

Change of class names and updated references