This sets up the infrastructure needed to continue implementing the onboarding UI for create and import of wallets. By fleshing out the global state management in the app now, we can better manage asynchronous IO to avoid blocking the UI.
This adds:
- Load and persistence a wallet in encrypted preferences
- The stored data is written as a single JSON object, as opposed to multiple entries, to ensure atomic writes
- The data is versioned, so that we can change the JSON format readily in the future
- Detection of application state, e.g. onboarding versus loading the user's wallet
- Touch points to initialize the SDK
This adds infrastructure to read/write preferences, with both a multiplatform wrapper and an Android-specific implementation.
This implementation is primarily designed to cover the initial needs of implementing the wallet SDK integration for issue #28 for securely storing keys (with encryption) for the user's wallet.
Carter Jernigan