All Angular builders are now located within one subdirectory of the `src` directory. This organization provides better discovery of the builders and will allow builder specific code to be stored in a single area.
All TypeScript files have been updated to pass the new eslint-based linting checks. eslint compatible disabling comments have also been added in place of the previous tslint comments.
The virtualfs Host was only used for exist and directory checks during asset and file replacement option normalization within the browser and dev-server builders.
Remove the manually maintained schema.d.ts from the browser builder, and use
the Schema JSON file to generate it. This had a lot of repercussions around
the whole build-angular code base and the different interfaces that were
manually kept.
