terraform: add page (#2340)

pages/common/terraform.md

@@ -0,0 +1,19 @@
+# terraform
+
+> Create and deploy infrastructure as code to cloud providers.
+
+- Initialize a new or existing Terraform configuration:
+
+`terraform init`
+
+- Generate and show an execution plan:
+
+`terraform plan`
+
+- Build or change infrastructure:
+
+`terraform apply`
+
+- Destroy Terraform-managed infrastructure:
+
+`terraform destroy`