Fixed color thresholding for the most part. Probably gonna have to incorporate brightness and saturation though, not just hue

Cleaned up board_detector.py and fixed the color issue on the masked image at the end. Just need to fix color thresholds

Saving progress: we have color filtering, although the thresholds are completely wrong for the exact colors (need to fix). Will show the warped image with the corresponding filtered and warped hsv and then print to the console the colors it finds. Next steps are fixing the thresholds and taking the color_grid and turning it into FEN

changed sobel+houghlinesP to canny+houghlines. This includes different thresholding on horiz and vert lines, adding convert_lines for houghlinesP to houghlines differencs, and I also added sorting the corners (which should also work for sorting all corners of 9x9 grid)