clutter/main: Add 'detailed-trace' debug flag

Will be used to trace a lot more, and with more details, and thus may
have a larger impact on what is actually measured. This potential impact
is the reason for enabling only when needed.

Part-of: <https://gitlab.gnome.org/GNOME/mutter/-/merge_requests/1700>

clutter/clutter/clutter-main.c

@@ -117,6 +117,7 @@ static const GDebugKey clutter_debug_keys[] = {
   { "clipping", CLUTTER_DEBUG_CLIPPING },
   { "oob-transforms", CLUTTER_DEBUG_OOB_TRANSFORMS },
   { "frame-timings", CLUTTER_DEBUG_FRAME_TIMINGS },
+  { "detailed-trace", CLUTTER_DEBUG_DETAILED_TRACE },
 };
 #endif /* CLUTTER_ENABLE_DEBUG */
 

clutter/clutter/clutter-main.h

@@ -54,6 +54,7 @@ typedef enum
   CLUTTER_DEBUG_CLIPPING            = 1 << 15,
   CLUTTER_DEBUG_OOB_TRANSFORMS      = 1 << 16,
   CLUTTER_DEBUG_FRAME_TIMINGS       = 1 << 17,
+  CLUTTER_DEBUG_DETAILED_TRACE      = 1 << 18,
 } ClutterDebugFlag;
 
 typedef enum