add queue offsets to user

env/db/02_structure.sql

@@ -7,7 +7,8 @@ create table users
     password_hash varchar(255) not null,
     hardware      text         null,
     hardware_hash   varchar(120) null,
-    role          varchar(20)  not null
+    role          varchar(20)  not null,
+    user_config   varchar(512) null
 );
 grant select, insert, update, delete on public.users to azaion_admin;
 grant select on table public.users to azaion_reader;