feat(crypto/keyring): expose db keyring used in the keystore (#24040)

Co-authored-by: Alex | Interchain Labs <alex@interchainlabs.io>
Co-authored-by: Tyler <48813565+technicallyty@users.noreply.github.com>

crypto/keyring/keyring.go

@@ -50,8 +50,9 @@ const (
 )
 
 var (
-	_                          Keyring = &keystore{}
-	maxPassphraseEntryAttempts         = 3
+	_                          Keyring       = &keystore{}
+	_                          KeyringWithDB = &keystore{}
+	maxPassphraseEntryAttempts               = 3
 )
 
 // Keyring exposes operations over a backend supported by github.com/99designs/keyring.
@@ -104,6 +105,13 @@ type Keyring interface {
 	Migrator
 }
 
+type KeyringWithDB interface {
+	Keyring
+
+	// Get the db keyring used in the keystore.
+	DB() keyring.Keyring
+}
+
 // Signer is implemented by key stores that want to provide signing capabilities.
 type Signer interface {
 	// Sign sign byte messages with a user key.
@@ -258,6 +266,11 @@ func (ks keystore) ExportPubKeyArmor(uid string) (string, error) {
 	return crypto.ArmorPubKeyBytes(bz, key.Type()), nil
 }
 
+// DB returns the db keyring used in the keystore
+func (ks keystore) DB() keyring.Keyring {
+	return ks.db
+}
+
 func (ks keystore) ExportPubKeyArmorByAddress(address sdk.Address) (string, error) {
 	k, err := ks.KeyByAddress(address)
 	if err != nil {