Add security group to outputs

[jkkitakita]

This pull request adds several new outputs to the Terraform modules for AWS EC2, ECS, and ECS EC2. These outputs provide the security group ARNs and IDs for various AWS resources, which can be useful for referencing these security groups in other parts of the infrastructure configuration.

New outputs added:

AWS EC2 Module:

• Added ec2_security_group_arn and ec2_security_group_id outputs to provide the ARN and ID of the security group associated with the EC2 instance.

AWS ECS Module:

• Added ecs_alb_security_group_arn and ecs_alb_security_group_id outputs to provide the ARN and ID of the security group associated with the Retool ALB.
• Added ecs_containers_security_group_arn and ecs_containers_security_group_id outputs to provide the ARN and ID of the security group associated with the Retool containers.
• Added rds_security_group_arn and rds_security_group_id outputs to provide the ARN and ID of the security group associated with the RDS instance.

AWS ECS EC2 Module:

• Added ecs_alb_security_group_arn and ecs_alb_security_group_id outputs to provide the ARN and ID of the security group associated with the Retool ALB.
• Added ecs_ec2_security_group_arn and ecs_ec2_security_group_id outputs to provide the ARN and ID of the security group associated with the Retool EC2.
• Added rds_security_group_arn and rds_security_group_id outputs to provide the ARN and ID of the security group associated with the RDS instance.