utils tests

[0xFirekeeper]

PR-Codex overview

The focus of this PR is to enhance utility functions in Utils.cs and add tests in UtilsTests.cs.

Detailed summary

• Added utility functions for converting bytes to hex, hex to bytes, string to hex, hex to string, and getting Unix timestamp
• Added tests for utility functions in UtilsTests.cs

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[codecov-commenter]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 14.12%. Comparing base (4f8d405) to head (a61f0f6).

Additional details and impacted files

@@            Coverage Diff             @@
##             main       #9      +/-   ##
==========================================
+ Coverage   11.09%   14.12%   +3.02%     
==========================================
  Files          33       33              
  Lines        2352     2365      +13     
  Branches      217      217              
==========================================
+ Hits          261      334      +73     
+ Misses       2090     2029      -61     
- Partials        1        2       +1     

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