New features

Issues resolved:

- https://www.drupal.org/project/commerce_price_rule/issues/3016544

Issue #3014701 by yuriseki, tekNorah: Error on attempt to create Action: Change form display
Small array index check on ViewResultVariable.php
Issue #3012730 by C.E.A, yuriseki: Tokens are still printing even if the field values are empty
Issue #3014253 by Baik Ho, ChrisZZ: Email not validated properly (uppercase)
Allow tokens to use Business Rules variables.
Workaround on FetchEntityVariableAction.

• Configuration to customize input placeholder text, label, and description in search block added.
• Configuration to customize noResultsString and resultSetSize parameters added.
• Link to module configuration page added to module list page.
• README file added

Provide base_url in template.