Add starter for Webpack, SCSS, and TypeScript

Many modern AngularJS developers have moved to Webpack, SCSS, and TypeScript. Currently we have a TypeScript starter branch but it uses JSPM and CSS.

It would be good to show the community a solid starter repo that combined Webpack, SCSS, and TypeScript so that we could

• Reproduce issues that some developers run into
• Document and recommend ways to consume the AngularJS Material SCSS
• Help the community move closer to a smooth upgrade path for Angular and Angular Material
• Look at making this starter available via Stackblitz