Migrate com.facebook.react.views.text.ReactTextViewManagerCallback to Kotlin (#47516)

Summary:
Pull Request resolved: #47516

As per title.

Changelog: [Internal]

Reviewed By: javache

Differential Revision: D65598258

fbshipit-source-id: 0ef7e9a4aefcb021bc55698eaf43c2a69bbb4f63

Author: fabriziocucci

packages/react-native/ReactAndroid/src/main/java/com/facebook/react/views/text/ReactTextViewManagerCallback.java

@@ -0,0 +1,25 @@
+/*
+ * Copyright (c) Meta Platforms, Inc. and affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
+package com.facebook.react.views.text
+
+import android.text.Spannable
+
+/**
+ * This interface allows clients of [ReactTextViewManager] to customize or prepare [Spannable]
+ * object that represent text that will be rendered on the screen.
+ */
+public fun interface ReactTextViewManagerCallback {
+
+  /**
+   * Callback executed right after the [Spannable] object is created by React.
+   *
+   * This callback can be used by different implementations of ReactTextViewManager to customize or
+   * extend the [Spannable] created by React.
+   */
+  public fun onPostProcessSpannable(text: Spannable)
+}