text: create table twitch_oauth(
      id      bigint  primary key,
      token   text    not null
  );
  
  create type twitch_notify_method as enum (
      'mention',
      'whisper'
  );
  
  create table twitch_notify(
      id      bigint                  not null,
      channel text                    not null,
      method  twitch_notify_method    not null     default 'mention',
  
      primary key(id, channel, method)
  );
  