Indicate if there were errors in the summary

src/spectator/formatters/common_text_output.cr

@@ -129,6 +129,7 @@ module Spectator::Formatters
     def report_summary(summary : Summary) : Nil
       status = case summary
                when .passed?  then "Passed"
+               when .errored? then "Failed (with errors)"
                when .failed?  then "Failed"
                when .skipped? then "Passed (with skipped examples)"
                else                "Finished"

src/spectator/formatters/summary.cr

@@ -33,6 +33,10 @@ module Spectator::Formatters
       failed > 0
     end
 
+    def errored? : Bool
+      errors > 0
+    end
+
     def skipped? : Bool
       skipped > 0
     end