[ML] Add a dev-tools/ci.bat script to automate the Windows portion of…

… the CI (#31)

To facilitate migration from ML team CI to Infra CI we need to make the
steps triggered by Jenkins as simple as possible.

This change adds a ci script that can be used for Windows.

dev-tools/ci.bat

@@ -0,0 +1,31 @@
+@echo off
+rem
+rem Copyright Elasticsearch B.V. and/or licensed to Elasticsearch B.V. under one
+rem or more contributor license agreements. Licensed under the Elastic License;
+rem you may not use this file except in compliance with the Elastic License.
+rem
+
+rem The Windows part of ML C++ CI:
+rem
+rem 1. Build and unit test the Windows version of the C++
+rem 2. Upload the build to the artifacts directory on S3 that
+rem    subsequent Java builds will download the C++ components from
+
+setlocal enableextensions
+
+rem Change directory to the top level of the repo
+cd %~dp0
+cd ..
+
+rem Ensure 3rd party dependencies are installed
+powershell.exe -ExecutionPolicy RemoteSigned -File dev-tools\download_windows_deps.ps1 || exit /b %ERRORLEVEL%
+
+rem Run the build and unit tests
+set ML_KEEP_GOING=1
+call .\gradlew.bat --info clean buildZip buildZipSymbols check || exit /b %ERRORLEVEL%
+
+rem Upload the artifacts to S3
+call .\gradlew.bat --info -b upload.gradle upload || exit /b %ERRORLEVEL%
+
+endlocal
+