Sort simple profiler summary based on mean duration

[rohitgr7]

What does this PR do?

Profiler is usually used to find bottlenecks. Now simple profiler non-extended summary is sorted based on mean duration.

Does your PR introduce any breaking changes? If yes, please list them.

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Did you have fun?

Make sure you had fun coding 🙃

cc @Borda @carmocca @kaushikb11 @ninginthecloud @rohitgr7

[tchaton]

LGTM !

[ethanwharris]

LGTM 😃