Create API for scrambling methods: Ability to add data array to the scrambler hook method.

Follow-up to #2610146: Create API for scrambling methods

Problem/Motivation

Add the ability to add a data array to the scrambler in order to configure the scrambling method.

Proposed resolution

Add the data array structure to the scrambler_field module.

API changes

Suggested data array structure:

$data['module_name'] = array(
  'unique_machine_name' => array(
    'base_table' => 'table_name',
    'fields' => array('field_name_1', 'field_name_2'),
    'method' => 'method_name' // shuffle_characters, shuffle_words, empty_value
  ),
);