[Thread] add a script for make-pretty

This make-pretty.sh can be called from any where and it formats only
java code under packages/modules/Connectivity/thread/

Test: ./thread/scripts/make-pretty.sh
Change-Id: I1b24025cf0267c81a7b133d1e8a08f77cc7ddc0e

thread/framework/java/android/net/thread/ThreadNetworkController.java

@@ -31,7 +31,7 @@ import java.lang.annotation.RetentionPolicy;
  * Provides the primary API for controlling all aspects of a Thread network.
  *
  * @hide
-*/
+ */
 @FlaggedApi(ThreadNetworkFlags.FLAG_THREAD_ENABLED)
 @SystemApi
 public final class ThreadNetworkController {

thread/scripts/make-pretty.sh

+#!/usr/bin/env bash
+
+SCRIPT_DIR=$( cd -- "$( dirname -- "${BASH_SOURCE[0]}" )" &> /dev/null && pwd )
+
+GOOGLE_JAVA_FORMAT=$SCRIPT_DIR/../../../../../prebuilts/tools/common/google-java-format/google-java-format
+
+$GOOGLE_JAVA_FORMAT --aosp -i $(find $SCRIPT_DIR/../ -name "*.java")