feat(ci): add Terragrunt pipeline with environments

Raffaele Vitiellorequested to merge
feature/INFRA-001-add-gitlab-pipeline into develop

This commit introduces a new GitLab CI pipeline for Terragrunt that:

  • Implements validation stage with security scanning
  • Adds plan/apply/destroy stages for test and prod environments
  • Configures proper branch protection rules

Merge request reports