feat(infrastructure): Integrate HTTP probe configuration for chaos experiments

- Added new environment variables for HTTP probe configuration in the GitHub Actions workflow, enhancing the monitoring capabilities during chaos experiments.
- Implemented a service exposure for the NGINX deployment to facilitate probe connectivity, ensuring that the HTTP probe can effectively monitor the service.
- Updated the `ExperimentDetails` struct to store the manifest returned by the `registerInfra` mutation, improving infrastructure management during activation.

Signed-off-by: Sky Singh <[email protected]>

Author: SkySingh04