[C++] Expose jemalloc statistics for logging

[asfimport]

This would enable us to log memory usage and diagnose out of memory issues.

Reporter: Rok Mihevc / @rok
Assignee: Rok Mihevc / @rok
Watchers: Rok Mihevc / @rok

Related issues:

• [C++] Failure in jemalloc stats tests (causes)

PRs and other links:

• GitHub Pull Request #13516

_{Note: This issue was originally created as ARROW-16981. Please see the migration documentation for further details.}

[asfimport]

Rok Mihevc / @rok:
Added ARROW-17685 to follow up this work.

[asfimport]

Antoine Pitrou / @pitrou:
Issue resolved by pull request 13516
#13516