fix: #35 - Limits the backtrace to 4 lines in our exceptions

[bougyman]

No description provided.

[Copilot]

Pull Request Overview

This PR introduces a custom error handling mechanism to limit backtrace output to 4 lines for better readability. The change addresses issue #35 by creating a new base error class that truncates stack traces.

• Introduces LeopardError as a new base class with truncated backtrace functionality
• Updates existing Error class to inherit from LeopardError instead of StandardError
• Maintains backward compatibility for existing error classes

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