refactor(profiling): extract SystemProfiler

[morrisonlevi]

Description

The global profiler (e.g. PROFILER) and the Profiler::* functions that worked on it were moved into a new struct SystemProfiler.

Motivation

The profiling/src/profiling/mod.rs file was getting big and there was a logical split for functions that worked on the global PROFILER vs those which worked on a profiler object.

Reviewer checklist

• Test coverage seems ok.
• Appropriate labels assigned.

[pr-commenter]

Benchmarks

Benchmark execution time: 2024-08-15 16:25:56

Comparing candidate commit 48498a4 in PR branch levi/system-profiler with baseline commit b8f3260 in branch florian/remove-mutex.

Found 0 performance improvements and 0 performance regressions! Performance is the same for 27 metrics, 9 unstable metrics.

[codecov-commenter]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 78.64%. Comparing base (b8f3260) to head (48498a4).

Additional details and impacted files

@@                   Coverage Diff                   @@
##             florian/remove-mutex    #2794   +/-   ##
=======================================================
  Coverage                   78.64%   78.64%           
  Complexity                   2452     2452           
=======================================================
  Files                         143      143           
  Lines                       14276    14276           
=======================================================
  Hits                        11228    11228           
  Misses                       3048     3048           

Flag	Coverage Δ
tracer-extension	79.21% <ø> (ø)
tracer-php	78.40% <ø> (ø)

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