Integrate `gitlab-cd-trigger` with GitHub Actions

[mb-wali]

🚀 Feature Request: Integrate gitlab-cd-trigger with GitHub Actions

Description:
Integrate gitlab-cd-trigger into the GitHub Actions workflow to enable triggering GitLab CI/CD pipelines from within GitHub.

Acceptance Criteria:

• gitlab-cd-trigger is added as part of the GitHub Actions workflow
• Triggering GitLab CI/CD pipelines from GitHub is functional and tested
• Document the integration process in the project README or workflow file