Adds copyright to test file

Author: JoseAlcerreca

ui/espresso/EspressoDeviceSample/app/src/androidTest/java/com/example/android/testing/espresso/EspressoDeviceSample/ResizeDisplayTest.kt

@@ -1,3 +1,19 @@
+/*
+ * Copyright (C) 2022 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
+ *
+ *   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.
+ */
+
 package com.example.android.testing.espresso.EspressoDeviceSample
 
 import androidx.test.espresso.device.DeviceInteraction.Companion.setDisplaySize