Support for latest eslint and typescript support

[piotrb]

This mostly requires adding @typescript-eslint/parser as a supported module

right now you get:

Module not supported: @typescript-eslint/parser
ESLint is running with the /usr/src/app/lib/empty-plugin.js parser.

Info about this is found here:

https://eslint.org/blog/2019/01/future-typescript-eslint

[ale7714]

@piotrb thank you for the ping! engine has been updated.

@ericrav thank you so much for you PR!