Sort module timing report by time spent in the module

[Dr15Jones]

The Module Summary part of the timing report lists the modules in the order in which they happen to have been added to the internal schedule. This order has no significance to a user. @VinInn suggested that the report should be sorted by decreasing time spent in a module. This would allow one to quickly see which modules are taking the most time.

[cmsbuild]

A new Issue was created by @Dr15Jones (Chris Jones).

@davidlange6, @smuzaffar, @Degano, @davidlt, @Dr15Jones can you please review it and eventually sign/assign? Thanks.

cms-bot commands are list here #13029

[Dr15Jones]

assign core

[cmsbuild]

New categories assigned: core

@Dr15Jones,@smuzaffar you have been requested to review this Pull request/Issue and eventually sign? Thanks

[slava77]

Grouping by dependence order would be more natural, something that's predictable from parsing the python.
Grouping by time spent or by incidental execution order is all random and seems of a limited use.

[Dr15Jones]

I can see ordering by timing making it easy for someone looking at the job as a whole and trying to access what is taking all the time.

I can see ordering by module label to make it easy to find a particular module of interest.

[wmtan]

This issue should be solved by PR #13225