C#: Report more timing metrics to the console logger.

Author: michaelnebel

csharp/extractor/Semmle.Extraction.CSharp.Standalone/Extractor.cs

@@ -154,7 +154,8 @@ public static ExitCode Run(Options options)
                 fileLogger.LogError($"  Unhandled exception: {ex}");
             }
 
-            logger.Log(Severity.Info, $"Extraction completed in {overallStopwatch.Elapsed}");
+            logger.Log(Severity.Info, $"Extraction completed in {analyzerStopwatch.Elapsed}");
+            logger.Log(Severity.Info, $"Total time: {overallStopwatch.Elapsed}");
 
             return ExitCode.Ok;
         }