TASK: Add suffix to trait and @var

* Add @var to processed annotations.
* Add suffix to trait.

src/Standards/Typo3Update/Sniffs/LegacyClassnames/ClassnameCheckerTrait.php

@@ -25,7 +25,7 @@ use PHP_CodeSniffer_File as PhpcsFile;
 /**
  * Provide common uses for all sniffs.
  */
-trait ClassnameChecker
+trait ClassnameCheckerTrait
 {
     /**
      * Contains mapping from old -> new class names.

src/Standards/Typo3Update/Sniffs/LegacyClassnames/DocCommentSniff.php

@@ -26,13 +26,13 @@
  */
 class Typo3Update_Sniffs_LegacyClassnames_DocCommentSniff implements PHP_CodeSniffer_Sniff
 {
-    use \Typo3Update\Sniffs\LegacyClassnames\ClassnameChecker;
+    use \Typo3Update\Sniffs\LegacyClassnames\ClassnameCheckerTrait;
 
     /**
      * The configured tags will be processed.
      * @var array<string>
      */
-    protected $allowedTags = ['@param', '@return'];
+    protected $allowedTags = ['@param', '@return', '@var'];
 
     /**
      * Original token for reuse accross methods.

src/Standards/Typo3Update/Sniffs/LegacyClassnames/InheritanceSniff.php

@@ -24,7 +24,7 @@
  */
 class Typo3Update_Sniffs_LegacyClassnames_InheritanceSniff implements PHP_CodeSniffer_Sniff
 {
-    use \Typo3Update\Sniffs\LegacyClassnames\ClassnameChecker;
+    use \Typo3Update\Sniffs\LegacyClassnames\ClassnameCheckerTrait;
 
     /**
      * Returns the token types that this sniff is interested in.