feat(v8): add llvm-libc to V8 deps

[targos]

Selectively keep only the folders that are needed at the moment

Refs: https://chromium-review.googlesource.com/c/v8/v8/+/7828379

I tested a canary update locally and this fixes the build.

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 71.78%. Comparing base (da35751) to head (9959161).

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #1073   +/-   ##
=======================================
  Coverage   71.78%   71.78%           
=======================================
  Files          41       41           
  Lines        5887     5887           
=======================================
  Hits         4226     4226           
  Misses       1661     1661           

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