doc(license): make the LICENSE file at the project root readable by pkg.go.dev

[samber]

Fixes #122

[codecov-commenter]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 69.17%. Comparing base (58b56e8) to head (7a51725).

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #126   +/-   ##
=======================================
  Coverage   69.17%   69.17%           
=======================================
  Files          76       76           
  Lines        9485     9485           
=======================================
  Hits         6561     6561           
  Misses       2839     2839           
  Partials       85       85           

Flag	Coverage Δ
unittests	69.17% <ø> (ø)

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[claude]

📋 Review Summary

This PR updates the LICENSE file to make it readable by pkg.go.dev. The changes are straightforward and well-executed.

✅ What's good

• Clear dual-licensing structure with proper attribution
• Complete Apache 2.0 license text included
• Enterprise licensing terms preserved and clarified
• Production usage definition is comprehensive and clear

🔍 Minor observations

• The license text is quite long, but this is necessary for pkg.go.dev compatibility
• No functional code changes, so no risk of breaking changes
• License format appears to follow Go project conventions

🎯 Recommendation

Approve - This is a documentation-only change that improves license visibility without any functional impact on the codebase.

The PR successfully addresses issue #122 and follows the project's contribution guidelines.