Support @typescript-eslint/recommended

Created by: vdbongard

Is your proposal related to a problem?

The default typescript template is not compatible with the @typescript-eslint/recommended rules.

Incompatible rules:

• @typescript-eslint/no-use-before-define
• @typescript-eslint/explicit-function-return-type

Steps to reproduce

1. yarn create react-app project --typescript
2. cd project
3. create .eslintrc.js:

module.exports = {
  extends: [
    'plugin:@typescript-eslint/recommended',
    'react-app',
  ],
};

3. eslint '*/**/*.{ts,tsx}' --fix

2 errors, 17 warnings cannot be fixed:

• errors: @typescript-eslint/no-use-before-define
• warnings: @typescript-eslint/explicit-function-return-type

Describe the solution you'd like

The TypeScript template should be adjusted to be conform with the @typescript-eslint/recommended rules.

Additional infos

I can create a pull request with the changes needed.