disable eslint for generated files

[raycarter]

Because of that tslint is deprecated, we decided to use eslint instead. unfortunately the generated files contain only hint for tslint "tslint:disable". We would like to have eslint also disabled for the generated files. Of cause we can achieve that through adding the generated folder in the eslintignore file. Since the generated files already contain the hint for tslint, I think it would be alright to let them also have a hint for eslint. I would make a PR for this and let you review it. Thanks!