Add react-native-onyx

Merge pull request #952 from usmaniqbal998/add-react-refresh

removed react-refresh/babel from babel.config.js because it is dev only plugin

readme cleanup

replaced react-hot-loader with react-refresh

Update dependency sass to v1.44.0

Update dependency prettier to v2.5.0

Update dependency eslint-webpack-plugin to v2.6.0

Update dependency eslint-plugin-react to v7.27.1

Update dependency eslint-plugin-jsx-a11y to v6.5.1

Update dependency browserslist to v4.18.1

Update dependency webpack-dev-server to v3.11.3

Update dependency eslint-plugin-import to v2.25.3

Update dependency core-js to v3.19.2

Update babel monorepo