ARROW-15062: [C++] Add memory information to current spans#12702

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AlvinJ15 wants to merge 3 commits intoapache:masterfrom

AlvinJ15:ARROW-15062#Add_regular_logging_of_exec_plan_performance_metrics

Commits on Apr 21, 2022

ARROW-15062: [C++] Add memory information to current spans, bytes in memory_pool and RSS
AlvinJ15
committed
ARROW-15251: [C++] Remove memory system info (RSS) until query tester will be implemented
AlvinJ15
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Commits on Apr 25, 2022

Create START_COMPUTE_SPAN which add the memory info to the current span atributes.
AlvinJ15
committed