Add Yielder

[0xh3rman]

[gemini-code-assist]

Summary of Changes

Hello @0xh3rman, I'm Gemini Code Assist¹! I'm currently reviewing this pull request and will post my feedback shortly. In the meantime, here's a summary to help you and other reviewers quickly get up to speed!

This pull request introduces a comprehensive 'Yield' feature, enabling users to engage with yield-generating protocols directly within the application. It establishes a new dedicated module for yield management, integrates yield information into existing asset and staking views, and extends the transaction processing system to support yield deposits and withdrawals. The changes ensure a cohesive user experience for discovering and participating in yield opportunities.

Highlights

• New Yield Feature Module: A new 'Yield' feature module has been introduced, including YieldScene for displaying yield opportunities and positions, YieldInput for data passing, YieldOpportunityViewModel for individual opportunity presentation, and YieldSceneViewModel for managing the scene's logic and state.
• Asset Scene Integration: The AssetScene now conditionally displays yield positions and opportunities. The AssetSceneViewModel has been updated to integrate YieldService for fetching yield data, and new UI components (yieldView, yieldViewEmpty) have been added to present this information.
• Staking Scene Integration: The StakeScene can now navigate to the new YieldScene via an 'Earn' section, allowing users to access yield opportunities directly from their staking view. The StakeSceneViewModel was updated to support this navigation.
• Transaction Handling for Yield Operations: The Transfer module has been updated to support 'yield' related transactions, including deposit and withdrawal. This involved modifying TransactionFactory, TransferExecutor, AmountDataProvider, AmountInputConfig, and various Confirm view models to recognize and process yieldDeposit and yieldWithdraw transaction types.
• Core Service and Model Updates: The TransactionType enum now includes yieldDeposit and yieldWithdraw. GatewayService and Signer have been updated to handle these new transaction types, particularly for EVM chains, including ERC20 approvals when necessary. ViewModelFactory and AppResolver were extended to provide the YieldService and YieldSceneViewModel throughout the application.
• New Yield Service: A YieldService and its corresponding YieldServiceTestKit have been added to FeatureServices, providing an interface to interact with the underlying GemYielder for fetching yield data, checking availability, and executing deposit/withdraw operations.
• Simulator and Build Process Enhancements: The justfile has been updated to use the 'iPhone 17 Pro' simulator and includes a new run command to streamline the process of building, installing, and launching the application on the simulator.

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[gemini-code-assist]

Code Review

This pull request introduces a significant new "Yield" feature, allowing users to earn on their assets. The changes are extensive, touching multiple features to integrate this functionality, including UI additions in the Assets and Staking scenes, and core logic modifications in Transfer, Signer, and the newly created Yield and YieldService packages. My review focuses on ensuring the correctness and precision of balance calculations by advocating for the use of BigInt over Double, and on improving error handling for better debuggability. Overall, the implementation is well-structured and consistent with the existing architecture.