[ci] Add a builder for local_tests.sh on Windows (#524)

.ci.yaml

@@ -29,6 +29,16 @@ platform_properties:
       os: Windows
 
 targets:
+  - name: Windows local_tests master - packages
+    bringup: true
+    recipe: packages/packages
+    timeout: 30
+    properties:
+      add_recipes_cq: "true"
+      target_file: windows_local_tests.yaml
+      channel: master
+    scheduler: luci
+
   - name: Windows win32-platform_tests master - packages
     recipe: packages/packages
     timeout: 30

.ci/scripts/local_tests.sh

@@ -0,0 +1,7 @@
+#!/bin/bash
+# Copyright 2013 The Flutter Authors. All rights reserved.
+# Use of this source code is governed by a BSD-style license that can be
+# found in the LICENSE file.
+
+# TODO(stuartmorgan): Call scripts/local_tests.sh here as part of updating
+# that script to work on Windows.

.ci/targets/windows_local_tests.yaml

@@ -0,0 +1,5 @@
+tasks:
+  - name: prepare tool
+    script: .ci/scripts/prepare_tool.sh
+  - name: local tests
+    script: .ci/scripts/local_tests.sh