Add copyright headers

SBGoods · SBGoods · commit 0699b0ef8258 · 2025-07-23T16:38:10.000-04:00
diff --git a/internal/fwserver/schema_propose_new_plan_test.go b/internal/fwserver/schema_propose_new_plan_test.go
@@ -1,3 +1,6 @@
+// Copyright (c) HashiCorp, Inc.
+// SPDX-License-Identifier: MPL-2.0
+
 package fwserver
 
 import (
