feat(ClassFileName): Add sniff to check that class name matches file name

coder_sniffer/Drupal/Sniffs/Classes/ClassFileNameSniff.php

coder_sniffer/Drupal/Test/Classes/ClassFileNameUnitTest.php

...r/Drupal/Test/Classes/drupal7/class_file_name_test.module

coder_sniffer/Drupal/Test/Classes/drupal7/drupal7.info

...fer/Drupal/Test/Classes/drupal8/ClassFileNameUnitTest.php

coder_sniffer/Drupal/Test/Classes/drupal8/drupal8.info.yml

coder_sniffer/Drupal/Test/bad/BadUnitTest.php

coder_sniffer/Drupal/Test/bad/bad.php

coder_sniffer/Drupal/Test/bad/bad.php.fixed

coder_sniffer/Drupal/Test/good/good.php

coder_sniffer/DrupalPractice/Project.php

phpcs.xml.dist