Add Intl to globals in @react-native-community/eslint-config

[StasD]

In this package: https://github.com/facebook/react-native/tree/master/packages/eslint-config-react-native-community
you probably need to add Intl to globals as eslint complains about its use and for whatever reason it is not included by default. For now, I added it to my own config file.

React Native version:
System:
OS: macOS 10.15
CPU: (8) x64 Intel(R) Core(TM) i7-6820HQ CPU @ 2.70GHz
Memory: 152.51 MB / 16.00 GB
Shell: 5.7.1 - /bin/zsh
Binaries:
Node: 12.13.0 - /usr/local/bin/node
Yarn: 1.19.1 - /usr/local/bin/yarn
npm: 6.12.1 - /usr/local/bin/npm
Watchman: 4.9.0 - /usr/local/bin/watchman
SDKs:
iOS SDK:
Platforms: iOS 13.1, DriverKit 19.0, macOS 10.15, tvOS 13.0, watchOS 6.0
Android SDK:
API Levels: 27, 28, 29
Build Tools: 27.0.3, 28.0.3, 29.0.2
System Images: android-28 | Google APIs Intel x86 Atom, android-29 | Google APIs Intel x86 Atom
Android NDK: 20.0.5594570
IDEs:
Android Studio: 3.5 AI-191.8026.42.35.5900203
Xcode: 11.1/11A1027 - /usr/bin/xcodebuild
npmPackages:
react: 16.9.0 => 16.9.0
react-native: 0.61.3 => 0.61.3

Steps To Reproduce

1. I'm getting Intl underlined by the editor with this comment: 'Intl' is not defined. eslint(no-undef)

In a function e.g.

function formatPrice(localeCode, currency, price) {
  if (typeof price === 'number' && isFinite(price)) {
    return new Intl.NumberFormat(localeCode, {style: 'currency', currency}).format(price);
  }

  return '';
}

Describe what you expected to happen:

There should be no complains by eslint when I use Intl.

I also raised this issue on ESLint's github: eslint/eslint#12515