Update username references from MrRezoo to rezamobaraki

[Copilot]

This PR updates all references to the old GitHub username "MrRezoo" to the new username "rezamobaraki" and replaces "Mr.Rezoo" with the full name "Reza Mobaraki" throughout the repository.

Changes Made

• README.md: Updated the introduction line to display "Reza Mobaraki" instead of "Mr.Rezoo" while maintaining the existing LinkedIn profile link
• README.md: Updated the Contributors section to link to the new GitHub profile @rezamobaraki instead of the old @MrRezoo
• LICENSE: Cleaned up the copyright notice to show only "Reza Mobaraki" instead of "Reza Mobaraki | MR.Rezoo"

Verification

• All existing tests continue to pass (13/13 tests passing)
• No functional code was modified - only documentation and metadata updates
• Verified that no instances of the old username remain in the repository

This ensures consistency across the repository and reflects the updated GitHub username while maintaining all existing functionality and proper attribution.

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