Add support for Angular CLI v9

Describe the bug When adding @azure/ng-deploy to an angular project v9, we get the following error:

Cannot read the output path (architect.build.options.outputPath) of project "bazel-angular" in angular.json

To Reproduce Steps to reproduce the behavior:

1. npm i -g @angular/cli@9
2. angular new demo
3. ng add @azure/ng-deploy
4. See error

Expected behavior @azure/ng-deploy should support the new angular v9 builder API.

Screenshots

Related issue https://github.com/Azure/ng-deploy-azure/issues/85