Unable to build and generate WASM bindings

[dannroda]

When trying to use cargo run -p controller-uniffi --bin uniffi-bindgen-react-native it has two issues:

• It requires to have uniffi-bindgen-react-native by running
  cargo install --git https://github.com/jhugman/uniffi-bindgen-react-native --branch update-uniffi-0.30 uniffi-bindgen-react-native which fails because update-uniffi-0.30 is a PR, not a branch from that repo.
• uniffi-bindgen-react-native is not used like uniffi-bindgen-cpp for example, it doesn't have the --library parameter and needs some extra steps.
  So it fails generating the wasm bindings and/or package. It seems to need some ubrn config for that.