Feature: #70126 - Introduce TCA option to add autocomplete attribute to input fields

Description

It is now possible to enforce or disable the auto completion for input fields in edit mode. The option is called autocomplete and can be set to TRUE or FALSE in the config section of a field.

// Prevent auto completion of username field for be_users records
$GLOBALS['TCA']['be_users']['columns']['username']['config']['autocomplete'] = FALSE;