chore: 10.2 prepare, upgrade to current create-react-native structure

[mfazekas]

Description

Updates to current https://github.com/callstack/react-native-builder-bob structure.

• upgraded yarn to 3.6
• use metro config with react-native-monorepo-config - see https://github.com/callstack/react-native-builder-bob/blob/main/packages/create-react-native-library/templates/example-common/example/metro.config.js

Checklist

• I've read CONTRIBUTING.md
• I updated the doc/other generated code with running yarn generate in the root folder
• I have tested the new feature on /example app.
  • In V11 mode/ios
  • In New Architecture mode/ios
  • In V11 mode/android
  • In New Architecture mode/android
• I added/updated a sample - if a new feature was implemented (/example)

Screenshot OR Video

Component to reproduce the issue you're fixing