[Automation] Test Day: Automate RHDH Helm & Operator Deployments with Config and Auth

• One-click automation for Helm and Operator-based RHDH deployments for quick Test Day setup.
• Add and attach custom plugin configurations.
• Attach secrets securely.
• Add and attach custom app-config.

For Helm-based deployments, use the RHDH CV as the target to create an unreleased downstream deployment for testing.
For Operator-based deployments, use a specific RHDH version (e.g., 1.5) for unreleased downstream deployment testing.
Share the new RHDH base URL for each new deployment.

Create a well documented Readme.md

Push the code to the janus-qe GitHub organization.