Update .gitattributes

[alganet]

• Follows up on the rename from library/ to src/
• Includes required files for proper SBOM
• Don't show diffs for generated files (will appear just as "file changed")
• Include aliases.php

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 99.53%. Comparing base (7c681fe) to head (dfdd261).
⚠️ Report is 1 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff            @@
##               main    #1672   +/-   ##
=========================================
  Coverage     99.53%   99.53%           
  Complexity      928      928           
=========================================
  Files           190      190           
  Lines          2169     2169           
=========================================
  Hits           2159     2159           
  Misses           10       10           

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