Default `data-blockingmode` is set to auto

[froznxd]

The default data-blockingmode is set to auto and is not configurable. There can be two modes, auto and manual.
This should be configurable.

script.setAttribute('id', 'CookieBot');
script.setAttribute('src', 'https://consent.cookiebot.com/uc.js');
script.setAttribute('data-cbid', domainGroupId);
script.setAttribute('data-blockingmode', 'auto'); <-- This
script.setAttribute('type', 'text/javascript');