Add gitlab CI

I didn't fix the following to demonstrate the issue 🐛 Case mismatch between loaded and declared class names Active

 ------ ----------------------------------------------------------------------------- 
  Line   src/Plugin/UiPatterns/SettingDataProvider/MenuDataProvider.php               
 ------ ----------------------------------------------------------------------------- 
  9      Class                                                                        
         Drupal\ui_patterns_settings\Plugin\UiPatterns\SettingType\LinksSettingType   
         referenced with incorrect case:                                              
         Drupal\ui_patterns_settings\Plugin\UIPatterns\SettingType\LinksSettingType.  
  165    Class                                                                        
         Drupal\ui_patterns_settings\Plugin\UiPatterns\SettingType\LinksSettingType   
         referenced with incorrect case:                                              
         Drupal\ui_patterns_settings\Plugin\UIPatterns\SettingType\LinksSettingType.  
 ------ ----------------------------------------------------------------------------- 

The js file is not covered by FunctionalJavascripy, that worried me the most, but after manually testing the changes it works as expected, the pipeline changes are good.