docs: enhance CONTRIBUTING.md with detailed setup and workflow instructions

[kushalshit27]

🔧 Changes

docs: enhance CONTRIBUTING.md with detailed setup and workflow instructions

📝 Checklist

• I have added documentation for all new/changed functionality (or N/A)

[codecov-commenter]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 80.11%. Comparing base (a20c8bf) to head (288f13b).

Additional details and impacted files

@@           Coverage Diff           @@
##           master    #1115   +/-   ##
=======================================
  Coverage   80.11%   80.11%           
=======================================
  Files         131      131           
  Lines        4878     4878           
  Branches      959      959           
=======================================
  Hits         3908     3908           
  Misses        562      562           
  Partials      408      408           

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