Add nova ad banner to CMU Courses

[Xavilien]

Description

Closes #[REPLACE WITH ISSUE NUMBER]

Type of change

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)
• This change requires a documentation update

How Has This Been Tested?

• Test A
• Test B

Test Configuration:

• Node.js version:
• Python version:
• Desktop/Mobile:
• OS:
• Browser:

Checklist:

• My code follows the style guidelines of this project
• I have performed a self-review of my code
• I have commented my code, particularly in hard-to-understand areas
• I have made corresponding changes to the documentation
• My changes generate no new warnings
• I have added tests that prove my fix is effective or that my feature works
• New and existing unit tests pass locally with my changes

[railway-app]

This PR was not deployed automatically as @Xavilien does not have access to the Railway project.

In order to get automatic PR deploys, please add @Xavilien to your team on Railway.