src: split profiling helpers from util

[IlyasShabi]

Move CPU and heap profiling option parsing and heap profile serialization helpers to new file src/node_profiling.c this keep util smaller and have a profiling dedicated file.

[nodejs-github-bot]

Review requested:

• @nodejs/gyp

[codecov]

Codecov Report

❌ Patch coverage is 82.92683% with 14 lines in your changes missing coverage. Please review.
✅ Project coverage is 89.64%. Comparing base (b6b6e96) to head (1c9e4ed).
⚠️ Report is 8 commits behind head on main.

Files with missing lines	Patch %	Lines
src/node_profiling.cc	81.33%	1 Missing and 13 partials ⚠️

Additional details and impacted files

@@           Coverage Diff            @@
##             main   #63008    +/-   ##
========================================
  Coverage   89.64%   89.64%            
========================================
  Files         707      710     +3     
  Lines      219509   220322   +813     
  Branches    42095    42255   +160     
========================================
+ Hits       196775   197511   +736     
- Misses      14628    14660    +32     
- Partials     8106     8151    +45     

Files with missing lines	Coverage Δ
src/env.h	98.14% <ø> (ø)
src/node_profiling.h	100.00% <100.00%> (ø)
src/node_v8.cc	88.10% <ø> (ø)
src/node_worker.cc	82.32% <ø> (+0.30%)	⬆️
src/util.cc	87.44% <ø> (+0.90%)	⬆️
src/util.h	90.98% <ø> (-0.49%)	⬇️
src/node_profiling.cc	81.33% <81.33%> (ø)

... and 31 files with indirect coverage changes

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[joyeecheung]

Rubber stamp LGTM