exp, iat and nbf claim checkers can also be header checkers

Author: Spomky

src/Bundle/JoseFramework/Resources/config/checkers.php

@@ -38,17 +38,26 @@
         ->tag('jose.checker.claim', [
             'alias' => 'exp',
         ])
+        ->tag('jose.checker.header', [
+            'alias' => 'exp',
+        ])
     ;
 
     $container->set(IssuedAtChecker::class)
         ->tag('jose.checker.claim', [
             'alias' => 'iat',
         ])
+        ->tag('jose.checker.header', [
+            'alias' => 'iat',
+        ])
     ;
 
     $container->set(NotBeforeChecker::class)
         ->tag('jose.checker.claim', [
             'alias' => 'nbf',
         ])
+        ->tag('jose.checker.header', [
+            'alias' => 'nbf',
+        ])
     ;
 };