`keys parse` uses the global configuration before
before client applications have had a chance to
apply their settings.
This change adds a `GetSealedConfig()` helper
that waits for the config to be sealed before
returning it.
fixes#5091
addresses #5283
Keyrings store keys by name and hexbytes representation
of address. This turns keyring internal storage more
chain-agnostic and types.Config independent.
Obsolete Keybase internal state representation is not affected.