Replace Makefile with atmos.yaml #43

Job	Run time
terraform-module / CI / Labels Validate	5s
terraform-module / CI / Format HCL	17s
terraform-module / CI / Validate Codeowners (syntax)	6s
terraform-module / CI / bats	31s
terraform-module / CI / Find modules	4s
terraform-module / CI / Validate Codeowners (owners)	0s
terraform-module / Readme	0s
terraform-module / CI / Lint (.)	8s
terraform-module / CI / Lint (./examples/complete)	12s
terraform-module / ci	2s
terraform-module / Release	-1s
	1m 24s

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