Coding - Optimize gp_Vec, gp_Vec2d, gp_XY, and gp_XYZ classes

[dpasukhi]

• Renamed parameters in IsEqual, Mirror, and Mirrored methods for consistency.
• Simplified calculations in IsEqual methods by using absolute differences.
• Enhanced Mirror methods to precompute reflection matrix terms for better performance.
• Updated Transform methods to use consistent naming for transformation parameters.
• Replaced sqrt with std::hypot in Modulus methods for better numerical stability.
• Streamlined Cross and Multiply methods in gp_XYZ and gp_XY classes for clarity.
• Improved comments and documentation for better understanding of the code.