Add Windows CI script

PiperOrigin-RevId: 481680362
Change-Id: I87b2b71427a8ad2603f5445d6ef794c3fa84746e

ci/windows-presubmit.bat

+SETLOCAL ENABLEDELAYEDEXPANSION
+
+SET BAZEL_EXE=%KOKORO_GFILE_DIR%\bazel-5.1.1-windows-x86_64.exe
+
+SET PATH=C:\Python37;%PATH%
+SET BAZEL_PYTHON=C:\python37\python.exe
+SET BAZEL_SH=C:\tools\msys64\usr\bin\bash.exe
+SET CMAKE_BIN="C:\Program Files\CMake\bin\cmake.exe"
+SET CTEST_BIN="C:\Program Files\CMake\bin\ctest.exe"
+SET CTEST_OUTPUT_ON_FAILURE=1
+
+IF EXIST git\googletest (
+  CD git\googletest
+) ELSE IF EXIST github\googletest (
+  CD github\googletest
+)
+
+IF %errorlevel% neq 0 EXIT /B 1
+
+:: ----------------------------------------------------------------------------
+:: CMake Visual Studio 15 2017 Win64
+MKDIR cmake_msvc2017
+CD cmake_msvc2017
+
+%CMAKE_BIN% .. ^
+  -G "Visual Studio 15 2017 Win64" ^
+  -DPYTHON_EXECUTABLE:FILEPATH=c:\python37\python.exe ^
+  -DPYTHON_INCLUDE_DIR:PATH=c:\python37\include ^
+  -DPYTHON_LIBRARY:FILEPATH=c:\python37\lib\site-packages\pip ^
+  -Dgtest_build_samples=ON ^
+  -Dgtest_build_tests=ON ^
+  -Dgmock_build_tests=ON
+IF %errorlevel% neq 0 EXIT /B 1
+
+%CMAKE_BIN% --build . --target ALL_BUILD --config Debug -- -maxcpucount
+IF %errorlevel% neq 0 EXIT /B 1
+
+%CTEST_BIN% -C Debug --timeout 600
+IF %errorlevel% neq 0 EXIT /B 1
+
+CD ..
+RMDIR /S /Q cmake_msvc2017
+
+:: ----------------------------------------------------------------------------
+:: Bazel Visual Studio 15 2017 Win64
+
+SET BAZEL_VC=C:\Program Files (x86)\Microsoft Visual Studio\2017\BuildTools\VC
+%BAZEL_EXE% test ... ^
+  --compilation_mode=dbg ^
+  --copt=/std:c++14 ^
+  --copt=/WX ^
+  --features=external_include_paths ^
+  --keep_going ^
+  --test_output=errors ^
+  --test_tag_filters=-no_test_msvc2017
+IF %errorlevel% neq 0 EXIT /B 1