Allow configuration of "scrub_fields"

Patch attached:

• Add a scrub_fields field to module settings form.
• Pass scrub_fields to Rollbar init() method.
• Minor refactoring init() method for efficiency.

This is unnecessarily complicated, the following changes can be made:

$form['scrub_fields'] = [
  '#type' => 'textarea',
  '#title' => $this->t('Scrub fields'),
  '#default_value' => implode("\n", $config->get('scrub_fields')),
  '#description' => $this->t('Field names to scrub out of the entire payload. Enter one field name per line. Values will be replaced with asterisks.'),
];

->set('scrub_fields', preg_split("(\r\n?|\n)", $form_state->getValue('scrub_fields')))

// Populate basic configuration.
$configuration = [
  'access_token' => $token,
  'environment' => $environment,
  'scrub_fields' => $this->config->get('scrub_fields') ?? [],
];

Also a merge request is much easier for a maintainer to review and accept

Thanks, new patch incoming.

Updated patch attached.

Automatically closed - issue fixed for 2 weeks with no activity.