-class Light added to handle the construction of the triangle fan
-light can now be bounded between two bounderies
-differnt sections of main have been placed into different functions for readability
-imgui variables were made inline and moved to Utility.hpp for convenience
-the claculation of intersections for rays hav been moved to Ray::calculateIntersect
-variables containing std::vector<Ray>, class Light, and std::vector<sf::VertexArray> were moved outsid of main() for convenience
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