feat: larger artifact support

[drahnr]

Currently the artifact support is limited to 4 bytes for Elf since the size is limited to 4 bytes size declaration.
This creates rather funny situations where the binary size is correct, yet the find_section values only yield 4GB entries at most and head-truncate the actual payload.

I.e. in my case I got decapitated tar files which took a hot sec to triage.

[codecov-commenter]

Codecov Report

Attention: Patch coverage is 16.66667% with 5 lines in your changes missing coverage. Please review.

Project coverage is 70.63%. Comparing base (ea77f17) to head (17ad19a).

Files with missing lines	Patch %	Lines
lib.rs	16.66%	5 Missing ⚠️

Additional details and impacted files

@@           Coverage Diff           @@
##             main      #32   +/-   ##
=======================================
  Coverage   70.63%   70.63%           
=======================================
  Files           2        2           
  Lines         521      521           
=======================================
  Hits          368      368           
  Misses        153      153           

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[littledivy]

Nice catch!