chore: add batch file version of stage-release script (#734)

scripts/release/stage-release.bat

@@ -0,0 +1,28 @@
+@echo off
+REM Stages a release by putting everything that should be packaged and released
+REM into the ./deploy folder. This script should be run from the root of the
+REM material2 repo.
+
+REM Make sure you are not running `ng serve` or `ng build --watch` when running this.
+
+
+REM Clear dist/ and deploy/ so that we guarantee there are no stale artifacts.
+rmdir /S /Q dist
+rmdir /S /Q deploy
+
+REM Perform a build with the modified tsconfig.json.
+call ng build
+
+REM Inline the css and html into the component ts files.
+call npm run inline-resources
+
+REM deploy/ serves as a working directory to stage the release.
+mkdir deploy
+
+REM Copy all components/ to deploy/
+xcopy /E dist\components\*.* deploy\
+
+REM Copy the core/ directory directly into ./deploy
+xcopy /E dist\core\*.* deploy\core\
+
+REM To test the packages, simply `npm install` the package directories.