Add External Secrets setup for AWS Secrets Manager integration

[QueenJcloud]

External Secrets Operator Setup

Implements secure secret management by integrating AWS Secrets Manager with the Kubernetes cluster using External Secrets Operator.

Changes

• Added Terraform code for IAM role and policy setup
• Created SecretStore and ExternalSecret Kubernetes manifests
• Configured IRSA for secure authentication between K8s and AWS

Files

• external-secrets-module - Complete setup with Terraform and Kubernetes manifests
• Includes documentation and setup instructions

Result
Secrets from AWS are now automatically synced and available in the cluster securely.

[QueenJcloud]

@ebunilo kindly check this out