Improve build binaries pipeline

[derrix060]

Changes made:

• build macOS arm and x86
• rename architecture from amd64 to x86_64, which is much easier to distinct from arm
• remove unnecessary step for self-hosted which is not being used anymore
• create ARTIFACT_NAME env var, so it's much easier to read the code
• remove unnecessary id
• add trigger on PR that change the build binaries files

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 78.32%. Comparing base (c0008d7) to head (9f742cf).
Report is 2 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #2121      +/-   ##
==========================================
+ Coverage   78.23%   78.32%   +0.08%     
==========================================
  Files         100      100              
  Lines        9126     9126              
==========================================
+ Hits         7140     7148       +8     
+ Misses       1345     1341       -4     
+ Partials      641      637       -4     

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[derrix060]

Results: https://github.com/NethermindEth/juno/actions/runs/10718771544?pr=2121