feat: enable terraform test by default (#25)

tests/module.tftest.hcl

@@ -0,0 +1,36 @@
+mock_provider "aws" {
+  mock_data "aws_availability_zones" {
+    defaults = {
+      names = [
+        "eu-west-1a",
+        "eu-west-1b",
+        "eu-west-1c"
+      ]
+    }
+  }
+}
+
+run "basic" {
+  command = plan
+
+  variables {
+    resolvers = {
+      outbound = {
+        create            = true
+        ip_address_offset = 10
+      }
+    }
+    name   = "spoke-dns"
+    region = "eu-west-2"
+    network = {
+      name               = "endpoints"
+      private_netmask    = 24
+      transit_gateway_id = "tgw-123456acb123"
+      vpc_cidr           = "10.20.0.0/21"
+    }
+    tags = {
+      Environment = "dev"
+    }
+  }
+
+}