[Keycard] Shell integration

[saledjenic]

Design for keycard shell integration:

• https://www.figma.com/design/gbkxrL08B2Bl8fzk1ILD17/QR-wallet-integration?node-id=0-1&p=f&t=PgRsZJGpaLliWAP3-0

Keycard shell should be integrated in:

• adding a new wallet account
• signing transaction

@sunleos @alaibe @xAlisher