add mutex profiling support

[bogdan-rosianu]

Called runtime.SetMutexProfileFraction(...) if the profiling mode is enabled. This allows developers taking mutex profiles while running the node.

[codecov-commenter]

Codecov Report

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@@               Coverage Diff               @@
##             rc/2022-june    #4126   +/-   ##
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  Coverage                ?   75.26%           
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  Files                   ?      617           
  Lines                   ?    82350           
  Branches                ?        0           
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  Hits                    ?    61979           
  Misses                  ?    15681           
  Partials                ?     4690           

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[gabi-vuls]

System test passed.