Add CDN configuration

[QuentinVecchio]

Description

This PR introduces a configuration folder that includes an example of CDN configuration file.
It is only meant as a good practise example related to https://experienceleague.adobe.com/docs/experience-manager-cloud-service/content/security/cdn-and-waf-rules.html.

Notes: This configuration folder is only useful in the context of AEM as a Cloud Service

Related Issue

Motivation and Context

How Has This Been Tested?

Screenshots (if appropriate):

Types of changes

• 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 change)

Checklist:

• I have signed the Adobe Open Source CLA.
• My code follows the code style of this project.
• My change requires a change to the documentation.
• I have updated the documentation accordingly.
• I have read the CONTRIBUTING document.
• I have added tests to cover my changes.
• All new and existing tests passed.

[QuentinVecchio]

Hi @davidjgonzalez @SachinMali, could I get a review on this PR?
Please let me know if you need any more context