add license headers

Change-Id: I0eb91c65c08c4b9a857cb906e9ca27f3c3009ff8

Author: alabiaga

samples/user-interface/live-updates/src/main/java/com/example/platform/ui/live_updates/LiveUpdateSample.kt

@@ -1,3 +1,19 @@
+/*
+ * Copyright 2025 The Android Open Source Project
+ *
+ * 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
+ *
+ *     https://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.
+ */
+
 package com.example.platform.ui.live_updates
 
 import android.annotation.SuppressLint

samples/user-interface/live-updates/src/main/java/com/example/platform/ui/live_updates/SnackbarNotificationManager.kt

@@ -1,5 +1,5 @@
 /*
- * Copyright 2023 The Android Open Source Project
+ * Copyright 2025 The Android Open Source Project
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.