feat: add EKS Auto Mode support #171

Job	Run time
terraform-module / CI / Labels Validate	4s
terraform-module / CI / Find modules	4s
terraform-module / CI / Validate Codeowners (syntax)	5s
terraform-module / CI / Format HCL	22s
terraform-module / CI / bats	38s
terraform-module / Readme	0s
terraform-module / CI / Validate Codeowners (owners)	0s
terraform-module / CI / Lint (./examples/complete)	20s
terraform-module / CI / Lint (.)	19s
terraform-module / ci	3s
terraform-module / Release	0s
	1m 55s

Provide feedback