Unused global CLI flags (`--accounts` etc.)

[DelevoXDG]

Current State

Root flags --account / --accounts-file / --keystore accepted by every subcommand

Objective

We could consider:

• moving --account` etc. flags to relevant commands only
• changing the interface for ledger (removing the extra argument for path)

Alternatively, we can consider:

• warnings if the said flag is unused
• keep it as it, to avoid breaking changes

Additional Context

⏳ TDB