Merge pull request github#6643 from MathiasVP/add-frontend-and-extractor-diagnostic-query

C++: Add uninterpreted query for obtaining frontend and extraction time

Author: geoffw0

cpp/ql/src/Metrics/Internal/DiagnosticsSumElapsedTimes.ql

@@ -0,0 +1,12 @@
+/**
+ * @name Sum of frontend and extractor time
+ * @description The sum of elapsed frontend time, and the sum of elapsed extractor time.
+ *              This query is for internal use only and may change without notice.
+ * @kind table
+ * @id cpp/frontend-and-extractor-time
+ */
+
+import cpp
+
+select sum(Compilation c, float seconds | compilation_time(c, _, 2, seconds) | seconds) as sum_frontend_elapsed_seconds,
+  sum(Compilation c, float seconds | compilation_time(c, _, 4, seconds) | seconds) as sum_extractor_elapsed_seconds