feat: add all of the terraform files

Signed-off-by: Vojtech Mares <iam@vojtechmares.com>

terraform/backend.tf

@@ -0,0 +1,10 @@
+terraform {
+  backend "s3" {
+    bucket         = "cthulhunetes--terraform-state"
+    key            = "terraform.tfstate"
+    region         = "eu-west-1"
+    encrypt        = true
+    kms_key_id     = "alias/cthulhunetes-key"
+    dynamodb_table = "cthulhunetes--terraform-state"
+  }
+}