Migrate TSLint to ESLint. Closes #209

[peterblazejewicz]

This commit rewrites linting support in the project to be based solely on the ESLint as advised by the TSLint tool authors: https://medium.com/palantir/tslint-in-2019-1a144c2317a9

The migration is based on default, recommended settings for TypeScript in ESLint and is expected to be updated in future to better fit project goals.

All references has been updated and replaced with relevant ESLint context:

• dependencies migration from TSLint to ESLint
• VSCode configuration changes to support ESLint extension
• VSCode extensions recommendation changes
• .eslintrc and .eslintignore configuration files added
• all error level problems in the source files are covered by this migration

This is the output of the npm run lint script:

npm run lint

> express-typescript-starter@0.1.0 lint /Users/piotrblazejewicz/git/TypeScript-Node-Starter
> tsc --noEmit && eslint '*/**/*.{js,ts}' --quiet --fix

Thanks!

/cc @felipesilvati

[orta]

Looks like tests are after including an @types dep?

[peterblazejewicz]

Looks like tests are after including an @types dep?

Yup, thanks! Interesting it worked locally. The PR updated. Let's wait for Travis

[orta]

Cool, nice, ship it when you're happy 👍