Add missing license headers

Author: cdn34dd

packages/react-native-session-replay/android/src/main/kotlin/com/datadog/reactnative/sessionreplay/ReactNativeInternalCallback.kt

@@ -1,3 +1,9 @@
+/*
+ * Unless explicitly stated otherwise all files in this repository are licensed under the Apache License Version 2.0.
+ * This product includes software developed at Datadog (https://www.datadoghq.com/).
+ * Copyright 2016-Present Datadog, Inc.
+ */
+
 package com.datadog.reactnative.sessionreplay
 
 import android.app.Activity

packages/react-native-session-replay/android/src/main/kotlin/com/datadog/reactnative/sessionreplay/mappers/DefaultMapper.kt

@@ -1,3 +1,9 @@
+/*
+ * Unless explicitly stated otherwise all files in this repository are licensed under the Apache License Version 2.0.
+ * This product includes software developed at Datadog (https://www.datadoghq.com/).
+ * Copyright 2016-Present Datadog, Inc.
+ */
+
 package com.datadog.reactnative.sessionreplay.mappers
 
 import ReactViewBackgroundDrawableUtils

packages/react-native-session-replay/android/src/main/kotlin/com/datadog/reactnative/sessionreplay/mappers/ReactViewModalMapper.kt

@@ -1,3 +1,9 @@
+/*
+ * Unless explicitly stated otherwise all files in this repository are licensed under the Apache License Version 2.0.
+ * This product includes software developed at Datadog (https://www.datadoghq.com/).
+ * Copyright 2016-Present Datadog, Inc.
+ */
+
 package com.datadog.reactnative.sessionreplay.mappers
 
 import ReactViewBackgroundDrawableUtils

packages/react-native-session-replay/android/src/rn69/kotlin/com.datadog.reactnative.sessionreplay/utils/ReactViewBackgroundDrawableUtils.kt

@@ -1,3 +1,8 @@
+/*
+ * Unless explicitly stated otherwise all files in this repository are licensed under the Apache License Version 2.0.
+ * This product includes software developed at Datadog (https://www.datadoghq.com/).
+ * Copyright 2016-Present Datadog, Inc.
+ */
 import android.graphics.drawable.Drawable
 import android.graphics.drawable.InsetDrawable
 import android.graphics.drawable.LayerDrawable