chore: Replace Makefile with atmos.yaml (#65) #20

Job	Run time
terraform-module / CI / Labels Validate	2s
terraform-module / CI / bats	31s
terraform-module / Readme / Readme	1m 6s
terraform-module / CI / Find modules	9s
terraform-module / CI / Format HCL	15s
terraform-module / CI / Validate Codeowners (syntax)	5s
terraform-module / CI / Validate Codeowners (owners)	-1s
terraform-module / CI / Lint (./examples/complete)	6h 0m 15s
terraform-module / CI / Lint (.)	16s
terraform-module / ci	4s
terraform-module / Release	0s
	6h 2m 42s

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