feat: configuring native-stack transitions from JS

[WoLewicki]

Description

Added an option to provide custom transitions between screens from JS. It requires setting stackAnimation: 'custom' and providing animationSpec on screen.

Changes

Added stackAnimation: 'custom' and animationSpec prop to Screen component.

Test code and steps to reproduce

Test1035.tsx

Checklist

• [x] Included code example that can be used to test this change
• [x] Updated TS types
• [ ] Updated documentation:
  • [ ] https://github.com/software-mansion/react-native-screens/blob/master/guides/GUIDE_FOR_LIBRARY_AUTHORS.md
  • [ ] https://github.com/software-mansion/react-native-screens/blob/master/native-stack/README.md
  • [ ] https://github.com/software-mansion/react-native-screens/blob/master/createNativeStackNavigator/README.md
  • [ ] https://github.com/software-mansion/react-native-screens/blob/master/src/types.tsx
  • [ ] https://github.com/software-mansion/react-native-screens/blob/master/src/native-stack/types.tsx
• [x] Ensured that CI passes

[hirbod]

This would be a great feature to land!

[sbearben]

Agree this would be awesome - curious, was this PR mostly an experiment to gauge feasibility?

[WoLewicki]

I think we will not go this way with custom transitions. After we release SET(https://github.com/software-mansion/react-native-screens/pull/1591), I think we can extend the API to be able to animate whole screens with it so we'll get the benefit of all preconfigured animations etc.