implement svg interface in login and signup

core/nkode/in_memory_db.go

@@ -105,6 +105,18 @@ func (db *InMemoryDb) RefreshUser(user m.User, passocode []int, customerAttr m.C
 	return nil
 }
 
+func (db *InMemoryDb) RandomSvgInterface(kp m.KeypadDimension) ([]string, error) {
+	return nil, errors.ErrUnsupported
+}
+
+func (db *InMemoryDb) RandomSvgIdxInterface(kp m.KeypadDimension) (m.SvgIdInterface, error) {
+	return nil, errors.ErrUnsupported
+}
+
+func (db InMemoryDb) GetSvgStringInterface(idxs m.SvgIdInterface) ([]string, error) {
+	return nil, errors.ErrUnsupported
+}
+
 func userIdKey(customerId m.CustomerId, username m.Username) string {
 	key := fmt.Sprintf("%s:%s", customerId, username)
 	return key