feat(bigquery): Add example for creating a none reservation assignment (#725)

Co-authored-by: Katie McLaughlin <[email protected]>

Author: ccarpentiere

bigquery/bigquery_create_reservation_none/main.tf

@@ -0,0 +1,25 @@
+/**
+ * Copyright 2024 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+# [START bigquery_create_reservation_assignment_none]
+data "google_project" "project" {}
+
+resource "google_bigquery_reservation_assignment" "default" {
+  assignee    = "projects/${data.google_project.project.project_id}"
+  job_type    = "QUERY"
+  reservation = "projects/${data.google_project.project.project_id}/locations/us/reservations/none"
+}
+# [END bigquery_create_reservation_assignment_none]