Design for react native wrappers

[TimoGlastra]

We need to write a total of three native wrappers around the new shared components libraries. We need to determine the best design to develop all three wrappers.

See this issue for a general strategy on current and proposed method: hyperledger/indy-vdr#59

We still need to look at the viability of this approach.

• Research viability of uniffi-rs and cxx for the c++ → rust layer (don't think this is needed)
• Research state of TurboModules, React Native CodeGen and React Native TS CodeGen
• Call shared components binary using dl open in c++ #36
• Create hello world turbo module for react native #35
• Combine Call shared components binary using dl open in c++ #36 and Create hello world turbo module for react native #35 to call native binary from JS
• Watch https://youtu.be/xKOkILSLs0Q -- this video uses some really advanced concepts that we don't all need. I think we just need JS -> C++ --> Binary
• Determine how to automatically build binaries of Askar, CredX and VDR for iOS and Android #47
• How to install library without needing a manual install step
  • pack binaries in package
  • use auto linking
• Make sure interfaces can be consistent across Node.JS and React Native
  • Idea: the Idiomatic wrapper on top of the native calls should be shared between Node.JS and React Native. E.g. Python wrapper for Askar has classes that abstract the native calls, but to recreate this for both Node.JS and React Native is not ideal I think

[TimoGlastra]

https://youtu.be/QGNxPvT3Dq0

[TimoGlastra]

https://github.com/greentriangle/react-native-leveldb
https://github.com/ammarahm-ed/react-native-simple-jsi
https://blog.notesnook.com/getting-started-react-native-jsi/
https://github.com/callstack/react-native-builder-bob