feat: add custom response headers with NGINX

[Eisie96]

PR Type

[x] Feature

What Is the Current Behavior?

A new environment variable ADDITIONAL_HEADERS is introduced for the nginx deployment to dynamically add custom headers to response request to the client.

example for docker-compose.yml:

   nginx:
    build: nginx
    environment:
      ADDITIONAL_HEADERS: |
        headers:
          - X-Frame-Options: 'SAMEORIGIN'
          - X-Content-Type-Options: 'nosniff'

example for Helm values.yml:

  cache:
    extraEnvVars:
       - name: ADDITIONAL_HEADERS
         value: |
            headers:
              - X-Frame-Options: 'SAMEORIGIN'
              - X-Content-Type-Options: 'nosniff'

What Is the New Behavior?

Does this PR Introduce a Breaking Change?

[ x ] No

Other Information

AB#87490