Feature Request: Add a unified account status API for connection and readiness checks

[cinders-amines]

Applications using the Base Account SDK often need to determine whether an account is ready for interaction (configured, connected, correct network, and usable). Currently, developers must infer readiness by combining multiple calls and checks, which increases complexity.

Without a single source of truth for account status:

• Developers duplicate readiness logic across applications.
• UI may attempt account actions before the account is fully usable.
• Handling reconnects or partial configuration becomes error-prone.

Describe the solution you'd like

Introduce a first-class getAccountStatus() API (or hook, where applicable) that returns a structured status object describing readiness, connectivity, network validity, and blocking reasons. The API should be synchronous where possible and reactive to underlying state changes.