Add exclusion check for header files in problems predicate

Author: mbaluda

cpp/common/src/codingstandards/cpp/rules/includeguardsnotused/IncludeGuardsNotUsed.qll

@@ -24,6 +24,7 @@ class BlockedIncludeGuard extends HeaderFile {
 }
 
 query predicate problems(HeaderFile file, string message, HeaderFile other, string name) {
+  not isExcluded(file, getQuery()) and
   not file instanceof CorrectIncludeGuard and
   if file instanceof BlockedIncludeGuard
   then