Feature/raw data on sign screen

[Oxbobby]

Add a signingRequest.ts library to present the final data sent to the hardware device in a json friendly way

[Oxbobby]

/review

[github-actions]

PR Reviewer Guide 🔍

Here are some key observations to aid the review process:

⏱️ Estimated effort to review: 3 🔵🔵🔵⚪⚪

🧪 No relevant tests

🔒 No security concerns identified

✅ No TODO sections

⚡ Recommended focus areas for review Swallowed Error The #setHardwareWalletSigningRequest method silently catches and discards any errors thrown by getSigningRequestDisplayData. If serialization fails due to malformed data or a bug in the signing request library, the hardware wallet signing request is set to null without any logging, making debugging impossible and potentially leaving the sign screen blank for users. try { if (request) serializedRequestData = getSigningRequestDisplayData(request) } catch { serializedRequestData = null }