switched from contact to contactinterface in match

[juanse254]

Fixed and tested.

[mbovan]

There are some leftovers:

Parameter method documentation:

• \Drupal\crm_core_match\Matcher
• \Drupal\crm_core_match\Plugin\crm_core_match\engine\MatchEngineInterface
• \Drupal\crm_core_default_matching_engine\Plugin\crm_core_match\field\FieldHandlerInterface

Unused Contact class

• \Drupal\crm_core_match\Matcher
• \Drupal\crm_core_match\Plugin\crm_core_match\engine\MatchEngineBase
• \Drupal\crm_core_match\Plugin\crm_core_match\engine\MatchEngineInterface
• \Drupal\crm_core_default_matching_engine\Plugin\crm_core_match\engine\DefaultMatchingEngine
• \Drupal\crm_core_default_matching_engine\Plugin\crm_core_match\field\DateMatchField
• \Drupal\crm_core_default_matching_engine\Plugin\crm_core_match\field\FieldHandlerBase
• \Drupal\crm_core_default_matching_engine\Plugin\crm_core_match\field\FieldHandlerInterface
• \Drupal\crm_core_default_matching_engine\Plugin\crm_core_match\field\Unsupported
• \Drupal\collect\Plugin\crm_core_match\engine\DefaultMatchingEngine (Collect)