GPU: Add debug groups inside selection code

This makes the debugging easier.

source/blender/gpu/intern/gpu_select_sample_query.cc

@@ -26,6 +26,7 @@
 
 #include <stdlib.h>
 
+#include "GPU_debug.h"
 #include "GPU_framebuffer.h"
 #include "GPU_select.h"
 #include "GPU_state.h"
@@ -74,6 +75,8 @@ static GPUSelectQueryState g_query_state = {0};
 void gpu_select_query_begin(
     uint (*buffer)[4], uint bufsize, const rcti *input, char mode, int oldhits)
 {
+  GPU_debug_group_begin("Selection Queries");
+
   g_query_state.query_issued = false;
   g_query_state.bufsize = bufsize;
   g_query_state.buffer = buffer;
@@ -197,5 +200,7 @@ uint gpu_select_query_end(void)
   GPU_depth_test(g_query_state.depth_test);
   GPU_viewport(UNPACK4(g_query_state.viewport));
 
+  GPU_debug_group_end();
+
   return hits;
 }