ACP2E-2977: Implement Static test which will check for no usage of object manager in .phtml files

Author: veloraven

Diff for: Magento2/Sniffs/Phtml/PhtmlTemplateObjectManagerSniff.php

@@ -55,8 +55,9 @@ public function process(File $phpcsFile, $stackPtr)
         }
 
         $phpcsFile->addWarning(
-            'ObjectManager should not be used in .phtml template ' .
-            'as it\'s not a template\'s responsibility to create objects.',
+            'ObjectManager should not be used in .phtml template. ' .
+            'Templates must not instantiate new objects within their code. ' .
+            'All objects must be passed from the Block object.',
             $stackPtr,
             self::WARNING_CODE_OBJECT_MANAGER_USAGE
         );