[COMPLIANCE] Add Copyright and License Headers (hashicorp#28669)

Co-authored-by: hashicorp-copywrite[bot] <110428419+hashicorp-copywrite[bot]@users.noreply.github.com>

Author: hashicorp-copywrite[bot]

internal/services/cognitive/cognitive_account_rai_policy_resource.go

@@ -1,3 +1,6 @@
+// Copyright (c) HashiCorp, Inc.
+// SPDX-License-Identifier: MPL-2.0
+
 package cognitive
 
 import (

internal/services/cognitive/cognitive_account_rai_policy_resource_test.go

@@ -1,3 +1,6 @@
+// Copyright (c) HashiCorp, Inc.
+// SPDX-License-Identifier: MPL-2.0
+
 package cognitive_test
 
 import (

internal/services/mssql/mssql_job_target_group_resource.go

@@ -1,3 +1,6 @@
+// Copyright (c) HashiCorp, Inc.
+// SPDX-License-Identifier: MPL-2.0
+
 package mssql
 
 import (

internal/services/mssql/mssql_job_target_group_resource_test.go

@@ -1,3 +1,6 @@
+// Copyright (c) HashiCorp, Inc.
+// SPDX-License-Identifier: MPL-2.0
+
 package mssql_test
 
 import (