chore: Add GitHub Settings (#221)

Author: osterman

.github/settings.yml

@@ -0,0 +1,7 @@
+# Upstream changes from _extends are only recognized when modifications are made to this file in the default branch.
+_extends: .github
+repository:
+  name: terraform-aws-s3-bucket
+  description: Terraform module that creates an S3 bucket with an optional IAM user for external CI/CD systems
+  homepage: https://cloudposse.com/accelerate
+  topics: terraform, terraform-module, s3, iam, iam-user, cicd, travis-ci, circleci, codefresh, bucket, artifacts, artifacts-repository, hcl2