Add copyright headers to checksum codegen tests

Author: 0marperez

tests/codegen/checksums/src/commonTest/kotlin/ChecksumBusinessMetricsTest.kt

@@ -1,3 +1,8 @@
+/*
+ * Copyright Amazon.com, Inc. or its affiliates. All Rights Reserved.
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
 import aws.sdk.kotlin.test.checksums.TestClient
 import aws.sdk.kotlin.test.checksums.httpChecksumOperation
 import aws.sdk.kotlin.test.checksums.model.ChecksumAlgorithm

tests/codegen/checksums/src/commonTest/kotlin/ChecksumConfigTest.kt

@@ -1,3 +1,8 @@
+/*
+ * Copyright Amazon.com, Inc. or its affiliates. All Rights Reserved.
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
 import aws.sdk.kotlin.runtime.auth.credentials.StaticCredentialsProvider
 import aws.sdk.kotlin.test.clientconfig.*
 import aws.sdk.kotlin.test.clientconfig.model.ChecksumAlgorithm

tests/codegen/checksums/src/commonTest/kotlin/ChecksumRequestTest.kt

@@ -1,3 +1,8 @@
+/*
+ * Copyright Amazon.com, Inc. or its affiliates. All Rights Reserved.
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
 import aws.sdk.kotlin.runtime.auth.credentials.StaticCredentialsProvider
 import aws.sdk.kotlin.test.checksums.*
 import aws.sdk.kotlin.test.checksums.model.ChecksumAlgorithm

tests/codegen/checksums/src/commonTest/kotlin/ChecksumResponseTest.kt

@@ -1,3 +1,8 @@
+/*
+ * Copyright Amazon.com, Inc. or its affiliates. All Rights Reserved.
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
 import aws.sdk.kotlin.runtime.auth.credentials.StaticCredentialsProvider
 import aws.sdk.kotlin.test.checksums.*
 import aws.smithy.kotlin.runtime.auth.awscredentials.Credentials