src: port initializeImportMeta to native

[aduh95]

Supersedes #57003.

We should probably avoid translating the URL to a path twice when the user needs both dirname and filename, but I'm not sure if there's an elegant way to do it without crossing the C++/JS bundary.

[nodejs-github-bot]

Review requested:

• @nodejs/loaders

[codecov]

Codecov Report

Attention: Patch coverage is 77.27273% with 15 lines in your changes missing coverage. Please review.

Project coverage is 90.21%. Comparing base (6b0af17) to head (f10398b).
Report is 67 commits behind head on main.

Files with missing lines	Patch %	Lines
src/node_modules.cc	73.68%	4 Missing and 11 partials ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main   #57286      +/-   ##
==========================================
- Coverage   90.24%   90.21%   -0.04%     
==========================================
  Files         630      630              
  Lines      184908   185263     +355     
  Branches    36181    36253      +72     
==========================================
+ Hits       166874   167134     +260     
+ Misses      11061    11057       -4     
- Partials     6973     7072      +99     

Files with missing lines	Coverage Δ
lib/internal/modules/esm/initialize_import_meta.js	100.00% <100.00%> (ø)
src/node_modules.cc	78.55% <73.68%> (-0.47%)	⬇️

... and 70 files with indirect coverage changes

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[JakobJingleheimer]

I'm not great with cpp, but it looks fine AFAICT, and conceptually checks out 🙂

[jsumners-nr]

I think the original implementation is much easier to understand and maintain.

[aduh95]

I think the original implementation is much easier to understand and maintain.

Do you have any suggestions on how to improve it?