chore: add eslint back to template (facebook#27983)

Summary:
This PR is part of react-native-community/releases#157 (comment)
Adding eslint back to the template package.json

## Changelog

[Internal] [Fixed] - Add eslint back in template
Pull Request resolved: facebook#27983

Test Plan:
(edited)
- npx react-native init RN062 --version 0.62.0-rc.1
- yarn add -d eslint
- add npm script for lint
- yarn lint

Differential Revision: D19784567

Pulled By: TheSavior

fbshipit-source-id: 9ce24c0b674c2b1ea9fee3ed5614e8922f992f72

template/package.json

@@ -6,7 +6,8 @@
     "android": "react-native run-android",
     "ios": "react-native run-ios",
     "start": "react-native start",
-    "test": "jest"
+    "test": "jest",
+    "lint": "eslint ."
   },
   "dependencies": {
     "react": "16.12.0",
@@ -17,6 +18,7 @@
     "@babel/runtime": "^7.8.4",
     "@react-native-community/eslint-config": "^0.0.7",
     "babel-jest": "^25.1.0",
+    "eslint": "^6.5.1",
     "jest": "^25.1.0",
     "metro-react-native-babel-preset": "^0.58.0",
     "react-test-renderer": "16.12.0"